Question

$(a - b)(a + b) = a {}^{2} - b {}^{2}$
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Answer 1

Answer:

what is this

Step-by-step explanation:

what is this gycc

Answer 2

Step-by-step explanation:

It is actually a identity.

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