Question

solve 4x^2+7x-36 by quadratic formula
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Answer 1

Step-by-step explanation:

4x²+16x-9x-36=0

4x(x+4)-9(x+4)=0

(4x-9)(x+4)=0

4x-9=0,x+4=0

x=9/4,x=-4

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Answer 2

Answer:

$4 {x}^{2} + 7x - 36 \\ by \: middle \: term \: splitting \\ 4 {x}^{2} + (16 - 9)x - 36 \\ 4 {x}^{2} + 16x - 9x - 36 \\ 4x( x + 4) - 9(x + 4) \\ (x + 4)(4x - 9)$

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