Question

factorise a^2 - 4a + 4ab - b^2​

Answer 1

Answer:

(a+b)(a-b)-4a(1-b)

Step-by-step explanation:

a²-4a+4ab-b²

or a²-b²-4a+4ab

or (a+b)(a-b)-4a(1-b)

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