For what value of p,-4 is a zero of the polynomial x square-2x-(2p+3)

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asked Feb 21, 2019 150k views

1 Answer

Beyhan Gul · Answer 1 · 2019-02-27T05:27:23+0000

we have that
x²-2x-(2p+3)

if -4 is a zero of the polynomial
so
for x=-4
x²-2x-(2p+3)=0----> (-4)²-2*(-4)-(2p+3)=0-----> 16+8-2p-3=0
21-2p=0
2p=21
p=21/2-----> p=10.5

For what value of p,-4 is a zero of the polynomial x square-2x-(2p+3)

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