Question

verify wheather the following are zero of the polynomials or not
g(x)=2x²+x-1,x=-1/2​

Answer 1

Answer:

g(-1/2)=2(-1/2)^2+(-1/2)-1

g(-1/2)=2/4-1/2-1

=2/4-2/4-4/4

2/4-6/4

-4/4

=0

hence

x=-1/2 is a zero of polynomial 2x^2+x-1