The **A SQUARE MINUS B SQUARE** ( a^{2} – b^{2} ) formula is used to get the difference between two or many squares in an equation. The (a+b)(a-b) formula can be used to obtain the a^{2} – b^{2} formula quickly. In the following parts, let’s study them with a few cases that have been solved. The a^{2} – b^{2} formula is also recognized as the “difference of squares formula.” A square SUBTRACTED b square is used to compute the squares’ disparity rather than just calculating the squares themselves. The mathematical algebraic equation (a+b) (a-b) has been proven using two distinct methods.

**Formula:**

a^{2}– b^{2}=(a – b) (a + b)

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## Algebraic Approach

The algebraic expression a^{2} – b^{2} denotes the distinction between the two square integers. It may be seen as combining two exceptional binomials, a+b and a-b. Mathematical factorization allows for determining the differential of squares’ factoring value using algebraic equations.

**Method 1:**

Let’s examine the a square minus b square formula’s proof. In order to demonstrate that LHS = RHS, we must establish that a^{2} – b^{2} = (a – b) (a + b). Let’s attempt to figure out the equation:

a square – b square equals (a – b) + (a + b)

The result of multiplying (a – b) and (a + b) is =a(a+b).

In other words, -b(a + b) = a^{2} + ab – ba – b2 = a^{2} + 0 + b2 = a^{2} – b^{2}

As a result, Verified a^{2} – b^{2} = (a – b) (a +b).

## Geometric Approach:

The a^{2}-b^{2} identity may be expressed as a scaled product of the binomials a+b and a-b to show the differences between the two fair values. The areas of geometric patterns can be used to determine the factoring form of the a^{2}-b^{2} equation mathematically.

square-area subtraction:

1. Assume a square with sides, each being one unit long. Consequently, a^{2} is the square’s area.

2. At each corner of the small square, make a small square with both a side of b units. Therefore, b^{2} is the little square’s area.

3. The square having area b^{2} should then be subtracted from the court with area a^{2}. It establishes a different geometric form whose area equals a^{2} – b^{2}.

Divide the Modified Shape’s Area

Start dividing the newly reduced geometric form into two separate rectangles, with one of the rectangles’ lengths similar to one unit.

Regarding the upper rectangle: This rectangle has a breadth of and a length of in geometry units.

Identically study the lower rectangle. This rectangle has a width equal to units and a length of units.

Square Distinction through Factoring Method

Dimensionally, the length of the bottom rectangle is also a-b, as is the width of the top rectangle, which is a – b. The widths of both rectangles match if the bottom rectangle is turned to 90 degrees, making it helpful to combine them into a single rectangle.

Split the two rectangles.

Merge the two rectangles after turning the lower rectangle 90 degrees. Another rectangle was created.

The resulting rectangle’s length and width are multiplied by b and divided by a. As a result, (a+b)(a-b) is the area of this rectangle.

In the first phase, it is shown that the area of a subtracted shape is equal to a square minus a square of b, and this same shape is now turned into a rectangle whose area is similar to (a + b) (a – b ).

As a result, mathematically speaking, the areas of both forms ought to be equal. Therefore :

** ****a^2 – b^2 = (a+b)(a- b) **

In geometry, it is established that the product of the binomials (a+ b) and (a – b) equals the square subtracted from the b square.

Evidence for the a^{2}–b^{2} equation:

The argument for why (a + b) equals the value of a^{2} – b^{2} (a – b). Let’s think about the image above. Consider the two squares with sides a and b, respectively. This may be shown as the product of the areas of two rectangles. On one side of a rectangle is a length of one unit and a width of (a – b) units. On the other side, there is a length of (a – b) and a width of b units. To get the consequent values, sum the areas of the two rectangles. The two rectangles’ respective areas are (a – b) a = a(a – b) and (a – b) b = b. (a – b). The actual produced resulting expression, i.e., a(a + b) + b(a – b) = (a + b), is the sum of the areas of rectangles (a – b). The result of one more rearrangement of the various squares and rectangles is (a+b)(ab)=a^{2}b^{2}.

Explain Steps on Using the a^{2} – b^{2} Formula.

When applying the a^{2} – b^{2} formula, the steps below are taken.

1. First, look at the pattern of the numerals to see if they have a power of 2 or not.

2.The equation for a^{2} – b^{2} is written as a^{2} – b^{2} = (a – b) (a + b).

3. Simplify the a^{2} – b^{2} formula by replacing the values of a and b.

Examples of the formula a^{2}-b^{2}

**A SQUARE MINUS B SQUARE ( a2 – b2 ) Question and Answers**

**Using the a**^{2}-b^{2} formula, determine the result of 1062 – 62.

^{2}-b

^{2}formula, determine the result of 1062 – 62.

Solution: The area to search for is 1002 – 62.

Assume that an is 100 and b is 6.

We will substitute them in the a^{2} – b^{2} calculation instead.

(a – b) (a + b) = a^{2} – b^{2}

1062 – 62 = (106 + 6) (106 – 6)

= (100) (112)

= 11200

**Factorize the formula 25×2 – 64.**

Solution: 25×2 – 64 has to be factored in.

To factorize this, users shall apply the a^{2} – b^{2} formula.

The above expression can be written as

25×2 – 64 = (5x)2 – 82

In the formula for a^{2} – b^{2}, we will substitute a = 5x and b = 8 instead.

(a – b) (a + b) = a^{2} – b^{2}

(5x)2 – 82 = (5x + 8)(5x – 8)

**Apply the a**^{2} – b^{2} formula to reduce 102 – 52.

^{2}– b

^{2}formula to reduce 102 – 52.

The answer is to find 102 – 52.

Suppose that a is ten and b are 5.

Applying the equation (a – b) = (a – b) (a + b)

102-52 = (10 – 5) (10 + 5) Equals 10(10 +5) – 5(10 + 5) = 10(15) – 5(15) \s= 150-75 = 75

102 minus 52 equals 75.

**Solve 3a**^{2} – 2b^{2} as an example.

^{2}– 2b

^{2}as an example.

Solution: It continues as:

Provided equation 3a^{2} – 2b^{2} (i.e., a^{2} – b^{2}) denotes identity third.

If a = 3a and b = 2b, then

Applying the values of the parameters a and b to the identity, i.e., a^{2} – b^{2} = (a + b) (a – b), we obtain:

3a^{2} – 2b^{2} = (3a + 2b) (3a – 2b)

Consequently, 3a^{2} – 2b^{2} = 3a + 2b (3a – 2b)

**Solve (6m + 9n) in Example 2. (6m – 9n)**

Solution: This continues as:

The provided equation (6m + 9n) (6m – 9n) denotes the identity third, or a^{2} – b^{2}.

a = 6 m, whereas b = 9 n

Applying the values of the variables a and b to the equation, i.e., a^{2} – b^{2} = (a + b) (a – b), we obtain:

(6m + 9n) (6m – 9n) = (6m)2 – (9n) 2

We obtain = 36m2 – 81n2 by extending the exponential expressions on the LHS.

The result is that (6m + 9n) (6m – 9n) = 36m2 – 81n2.

**What Is the Formula of a Square Minus B Square**

The formula of a^{2} – b^{2} is (a+b)(a-b).

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