Question

Factorize 8x² + x -7​

Answer 1

Answer:

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Answer 2

$\large 8x ^ { 2 } +x-7</p><p>8x </p><p>2</p><p> +x−7$

$\large 8x^{2}+ax+bx-7 </p><p> ab</p><p>a+b=1</p><p>a+b=1</p><p>ab=8\left(-7\right)=-56</p><p>ab=8(−7)=−56$

$\large -1,56</p><p></p><p>-2,28</p><p></p><p>-4,14</p><p></p><p></p><p>−7,8$

$\large -1+56=55</p><p>−1+56=55</p><p>-2+28=26</p><p>−2+28=26</p><p>-4+14=10</p><p>−4+14=10</p><p>-7+8=1</p><p>−7+8=1$

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1

a=-7

a=−7

b=8

b=8

view step

8x^{2}+x-7

\left(8x^{2}-7x\right)+\left(8x-7\right)

\left(8x^{2}-7x\right)+\left(8x-7\right)

(8x

2

−7x)+(8x−7)

view step

x8x^{2}-7x

x\left(8x-7\right)+8x-7

x(8x−7)+8x−7

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8x-7

\left(8x-7\right)\left(x+1\right)

(8x−7)(x+1)

is true

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