Question

if the zero of the quadratic polynomial 4xsquare +kx-1 is1, then find the value of k

Answer 1

here I am with your answer mate

Answer 2

$<i> <b> <u>$
Heya

It is given that 1 is the zero of the polynomial 4x^2 + kx - 1

Then,

x = 1 as it can make the whole equation equals to zero.

So,

p(x) = 4x^2 + kx - 1

p(x) = 0

So,

4x^2 + kx - 1 = 0

4(1)^2 + k(1) - 1 = 0

4 + k - 1 = 0

k + 3 =

k = -3

Hope this helps you.