Question

factorise :
(x^2-4x+4)-81

please answer in steps...​

Answer 1

${x}^{2} - 4x + 4 - 81 \\ = {x}^{2} - 4x - 77 \\ = {x}^{2} - 11x + 7x - 77 \\ = x(x - 11) + 7(x - 11) \\ = (x - 11)(x + 7)$

Answer 2

Answer:

(x-11)(x+7)

Step-by-step explanation:

= x²−4x+4−81

=x²−4x−77

=x²−11x+7x−77

=x(x−11)+7(x−11)

=(x−11)(x+7)

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