exam Maths Puzzle Numerical Ability

If v = 3i-5j and w = -2i + 3j find 3v - 2w.

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exam Other Question

The golden ratio. The ancient Greeks thought that the most pleasing shape for a rectangle was one for which the ratio of the length to the width was 8 to 5, the golden ratio. If t Find all zeros (real and imaginary) for f(x)=x^4-6x^3+14x^2-14x+5