Question

Check whether 3 and -2 are the zeros of polynomials p(x) = x - x - 6

Answer 1

p(x)=x²-x-6

i ) p(3) = 3² - 2 - 6

= 9 - 8

= 1

≠ 0

Therefore,

3 is not a zero of p(x).

ii ) p(-2) = (-2)²-(-2)-6

= 4+2-6

= 0

Therefore,

-2 is a zero of p(x)

••••