Question

if polynomial 9x3+18x2-x-2 is given then verify -2 is zero of polynomial or not​

Answer 1

p(x)=9x³+18x²-x-2

p(-2)=9(-2)³+18(-2)² -(-2)-2

=9×-8+18×4+2-2

=-72+72+2-2

=0

thus, -2 is the zero of the polynomial

Answer 2

Answer:

Step-by-step explanation:

p(x) = 9x³ − 18x² − x − 2

p(x) = 9(-2)³ + 18(-2)² - (-2) -2

=9(-8)+ 18 (4)+ 2-2

=72+72+2-2

= 0