Question

7. verify whether x=3 is a zero of the polynomial x^2 +2x - 15​

Answer 1

Answer:

Yes, x = 3 is a zero of the polynomial since the remainder is zero.

Step-by-step explanation:

⇒ x² + 2x -15

⇒ 3² + 2(3) - 15

⇒ 9 + 6 -15

⇒ 15 -15

⇒ 0

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Answer 2

Answer:

p(x)=x^2+2x-15

p(3)=3^2+2(3)-15

=18+6-15

= 9

It is not a zero.

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