Question

verify that x =3 is the zero of the polynomial p(x) =x-2x-x​

Answer 1

Answer:

p(x) = x-2x-x

x= 3

sol: p(3) = 3-2(3) -3

p(3) = 1(3) -3

p(3) =3-3

p(3) = 0

Answer 2

Answer:

given polynomial x2+2x-15

to verify :x=3 is a zero of the given

polynomial

solution

consider

x2+2x-15

sub-x=3 in the above equation

(3)+2x-15

9+2(3)-15

9+6-15

15-15

0

thus x=3 is a zero of the polynomial.

x2+2x-15