Question

factorise : a²-4ab+4b²-16​

Answer 1

Answer:

a²-4ab+4b²-16

(a²-4ab+4b²) -(4)²

(a+b)²-(4)²

[(a+b)-(4) (a-b)-(4)]

(a+b-4) (a-b-4).

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Answer 2

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