Question

Find the value of k, if -8 is a zero of the polynomial 2x3 + kx2 + 174x + 432.​

Answer 1

Answer:

Hope my answer helps you mate :-)

Step-by-step explanation:

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The zero to polynomial is the value for x for which the whole polynomial becomes 0

So if x=-8

2×(-8)³ + 64k-1392+432=0

-1024 +64k-960=0

64k=1024+960

64k=1984

k=31

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