Question

factorise 84-2x-2x^2
please hurry

Answer 1

HEY!!

HERE IS YOUR ANSWER :-

$84 - 2x - 2x ^{2} \\ = - 2x {}^{2} - 2x + 84 \\ = 2x { }^{2} + 2x - 84 \\ = 2x {}^{2} + (14 - 12)x - 84 \\ = 2x {}^{2} + 14x - 12x - 84 \\ = 2x(x + 7) - 12(x + 7) \\ = (x + 7)(2x + - 12)$

SO,

$84 - 2x - 2 {x}^{2} = (x + 7)(2x - 2)$

Answer 2

Answer:

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