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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
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5 votes
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

User Chinmay Dabke
by
7.8k points

1 Answer

5 votes
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
User Sshongru
by
8.1k points
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