Question

What must be subtracted from 4x3+16x2-x+5to obtain a polynomial which is exactly divisible by x+5

Answer 1

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Answer 2

Answer:

-90 should be subtracted

Step-by-step explanation:

p(x)=4x3+16x2+x+5

p(-5)=0

4(-5)3+16(-5)2-(-5)+5

-500+400+10

-100+10=-90

So, -90 should be subtracted