Question

What is (a+b)(a-b) equal

Answer 1

Answer:a squared-b squared

Step-by-step explanation:

Answer 2

Answer:

$(a+b)(a-b)=a^{2} -b^{2}$

Step-by-step explanation:

This is a example of remarkable identities.

We know that the result of multiplication is called product and the values ​​that multiply are called factors.

We call remarkable identities to certain algebraic expressions with binomial products very frequent in the calculation.

For this example, we got a Product of the sum for the difference of two binomials.

$(a+b)(a-b)$

The product of the sum for the difference of two binomials is equal to the square of the first quantity, minus the square of the second.

$(a+b)(a-b)=a^{2} -b^{2}$

Demostration:

$(a+b)(a-b)= a^{2} -ab+ab-b^{2}=a^{2} -b^{2}$

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