Question

Find the value of 8 times the sum of cube of zeroes of polynoial 2x²-3x-1​

Answer 1

Let p(x)=2x

2

−(3k+1)x−9

Let α,β be the roots of this polynomial.

We know that

α+β=

2

3k+1

= Sum of the roots

αβ=

2

−9

= Products of the roots

Given that : One zero is negative of the other

⇒α=−β

⇒α+β=0

⇒α+β=

2

3k+1

=0

⇒3k+1=0

⇒k=−

3

1

Answer 2

Answer:

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Step-by-step explanation:

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