For what value of k,-4 is a zero of the polynomial x2-x- (2k + 2)? – InterviewSolution

1.

For what value of k,-4 is a zero of the polynomial x2-x- (2k + 2)?

Answer»

put -4 in the polynomial and make the expression equal to 0.

so (-4)² -(-4) -(2k+2) = 0=> 16+4-2k-2 = 0=> 2k=18and k= 9.

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