Question

verify x=2 is zero of the polynomial x³+4x² -3x-18=0 or Not?​

Answer 1

Step-by-step explanation:

Polynomial: x

3

+4x

2

−3x−18

If 2 is a zero, then it must satisfy the polynomial.

Then, f(2)=2

3

+4(2)

2

−3(2)−18=8+16−6−18

=24−24=0

Hence, 2 is a zero of the polynomial

Answer 2

Step-by-step explanation:

x³+4x²-3x-18=0

----------(X=2)

(2)³+4(2)²-3(2)-18=0

8+16-6-18=0

+10-10=0

0=0

L.H.S=R.H.S

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