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07-05-2017
Mathematics

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I need to know how to factor -8x^2 - x +9. I get confused when I factor out the -1. Please if you can show me it would be great! Thanks!

Respuesta :

07-05-2017

Favor out a-1 as long as you do it to the whole problem it is now equivalent then just worry about factoring the new product
-1(8x^2+X-9)
(8x+9)((X-1)
8x+9=0
Subtract 9 divide by 8
X=-9/ 8 answer
X-1=0 X=1 answer

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