For the equation 3x2+px+3=0,p>0 If one of the roots is square of the other, then p is equal to
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a
13
b
1
c
3
d
2/3
answer is C.
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Detailed Solution
Let α and α2 be the roots of the given equation. Then, α+α2=−p/3 and α3=1 Now, α3=1⇒α=1,ω,ω2Thus, the roots of the given equation are ω and ω2 Therefore α=0 Now, ∴ α+α2=−p3⇒ω+ω2=−p3⇒−1=−p3⇒p=3