CAPE Pure Mathematics Unit 1 · May/June 2011 · Paper 1 · Question Q12
The cubic equation whose roots \alpha, \beta and \gamma satisfy the following
\alpha + \beta + \gamma = \frac{-2}{7}
\alpha\beta + \beta\gamma + \gamma\alpha = -1
\alpha\beta\gamma = -\frac{3}{7}
is
- (A)
7x^3 + 2x^2 - 7x + 3 = 0 - (B)
7x^3 - 2x^2 - 7x + 3 = 0 - (C)
7x^3 - 2x^2 - 7x - 3 = 0 - (D)
7x^3 + 2x^2 - 7x - 3 = 0
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