andrewpark892 andrewpark892

02-09-2017
Mathematics

contestada

what polynomial should be added to 4x²+5x-8 in order to equal 0?
A. 4x+5x+8
b. -4x²-5x+8
c. -4x²-5x-8
d. -4x²
e. 4x²+5x-8

Respuesta :

texaschic101 texaschic101

02-09-2017

4x^2 + 5x - 8 + (- 4x^2 - 5x + 8) = 0

all ur doing is changing the signs so they will cancel each other out.

so ur adding : -4x^2 - 5x + 8

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