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Question

lf α,β,γ,δ are the roots of the equation 3x48x3+2x29=0, then Σαβ=

A
23
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B
23
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C
83
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D
83
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Solution

The correct option is A 23
Consider the given equation
3x48x3+2x29=0
We know that
For equation Ax4+Bx3+Cx2+Dx+E=0
αβ+βγ+γδ+δα=CA
Here C=2 and A=3
Hence, αβ=CA=23.

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