Question

If x=-1 in the zero of polynomial p(x)=x3-2x2+4x+k

Answer 1

Answer:

P(X) = X³ - 2X² + 4X + K

PUTTING VALUE OF X IN POLYNOMIAL

==> (-1)³ - 2(-1)² + 4(-1) + K

==> -1 -2 -4 +K = 0

==> -7+K = 0

==> K = 7