Question

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Verify whether 2 and o are zeroes of polynomial x3 - 2x²​

Answer 1

Answer:

Explanation:

The polynomial x3+2x2−x−2=0 can be factorised as follows:

x3+2x2−x−2=0

⟹x2(x+2)−1(x+2)=0

⟹(x2−1)(x+2)=0

⟹ x2−1=0 or x+2=0

⟹ x2=1 or x=−2

x=1, x=−1 and x=−2

Hence, the zeroes of the polynomial x3+2x2−x−2=0 are 1,−1,−2.

Hope it helps..!!