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23-01-2021
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(a+b) × (a-b) =

who answer first and correct answer i will mark as brilliant

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23-01-2021

Answer:

(a-b) x (a-b)

Step 1: a x a = a2

Step 2: a x (-b) = -ab

Step 3: -b x a = -ab

Step 4: -b x -b = b2

Thus (a-b) x (a-b) = a2 -ab -ab + b2 = a2 -2ab + b2

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