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For what value of k, -4 …

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For what value of k, -4 is a zero of the polynomial x to the power 2 -x-(2k+2)

Posted by Sangeeta Sharma 7 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Anu Rana 7 years, 5 months ago

Easy ans for this question

Lakshmish Lakshmish 7 years, 5 months ago

2k=18 k=9

Lakshmish Lakshmish 7 years, 5 months ago

x^2-x-(2k+2) Substitute (-4) instead of x because (-4) is one of the zeros of the polynomial .Then, (-4)^2-(-4)-(2k+2) =16+4-2k-2 =18-2k

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