Question

If one zero of the quadratic polynomial p(x) = kx² + 6x - 40 is 4, then the value of 'k' is


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Answer 1

ANSWER:

K=1

EXPLANATION:

Kx^2+6x-40=0

K(4)^2+6(4)-40=0 (given x=4)

16K+24-40=0

16K-16=0

16K=16

K=16/16

K=1

HOPE YOU UNDERSTAND THIS.