1.

In the polynomial kx2 + 2x – 5, what number must be taken ask to get a polynomial for which x –1 is a factor?

Answer»

p(x) = kx2 + 2x – 5

If (x – 1) is a factor, then p(1) = 0

p(1) = k(l)2 + 2 x 1 – 5

= k + 2 – 5 = k – 3

k – 3 = 0 k = 3



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