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02-10-2020
Mathematics

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Simplify: −3x2+7x+2+x3−x2−9

A −3x2+7x−7

B x3−3x2+7x−7

C x3−4x2+7x−9

D x3−4x2+7x−7

Respuesta :

02-10-2020

Step-by-step explanation:

-3x² + 7x + 2 + x³ - x² -9

= x³ -3x² -x² + 7x +2 -9

= x³ -4x² + 7x -7

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