Question

Check wheather 1/2 is the zero of the polynomial 2x square-7x+4

Answer 1

let p(x)=2x2-7x+4
x=2
p(2)=2(2)²-7(2)+4
p(2)=2*4-14+4
p(2)=8-10
p(2)=-2

Answer 2

therefore it's not zero of polynomial c