Question
Question: If α, β are the roots of ax<sup>2</sup> – 2bx + c = 0, then α<sup>3</sup>β<sup>3</sup> + α<sup>2</s...
If α, β are the roots of ax2 – 2bx + c = 0, then
α3β3 + α2β3 + α3β2 is –
A
a3c2(c+2b)
B
a3bc3
C
a3c2
D
None of thes
Answer
a3c2(c+2b)
Explanation
Solution
α + β = a2b, αβ = ac
α3β3 + α2β3 + α3β2 = (c/a)3 + (c/a)2 (2b/a)
= a3c2 [c + 2b]