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4 marksAlgebraic Operations

CAPE Pure Mathematics Unit 1 · May/June 2005 · Paper 1 · Question 8(a)

Find the range of values of k for which the quadratic equation x^2 + 2kx + 9 = 0 has complex roots.

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  1. 8(b)Express the complex number (2 + 3i) / (3 + 4i) in the form x + yi, where x and y are real numbers.[4 marks]

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