Question

(a+b)(a_b)=a2_b2 equestion in sum

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Answer 1

Step-by-step explanation:

(a+b) (a -b )= a^2 - b^2

(a+b) ^2 =a^2 + b^2 +2ab

(a-b) ^2 =a^2 + b^2 -2ab

(a-b) ^2 = (a+b) ^2 -4ab