Question

${ - x}^{2} + 7x - 12 \: factorise$
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Answer 1

Answer:

(-x+3)(x-4)

explanation

-(x)2 +7x-12

-((x)2-7x+12)

-((x)2-3x-4x+12)

-(x-3)(x-4)

(-x+3)(x-4

Answer 2

Answer:

$- (x - 3)(x - 4)$

Step-by-step explanation:

$- {x}^{2} + 7x - 12 \\ = - (x^{2} - 7x + 12) \\ = - ( {x}^{2} - 3x - 4x + 12) \\ = - x(x - 3) - 4(x - 3) \\ = - (x - 3)(x - 4)$

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