Question

check weather1/2is the zero of the polynomial2x2+x-1 or not

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Answer 1

Answer:

Given polynomial p(x)=2x−1

We know that p(x) is zero polynomial the value of p(x)=0

∴2x−1=0

Add 1 both sides we get

3x−1+1=1

⇒2x=1

Divided by 2 we get

x=21

So p(−21) is the zero polynomial 2x−1