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# Need some help with a further maths question... watch

1. Find z if:
Z+3i z*=-1+13i

I know I need to divide -1+13i by z+3i, but I keep getting answers that don’t seem right...
2. (Original post by alex.scholes28)
Find z if:
Z+3i z*=-1+13i

I know I need to divide -1+13i by z+3i, but I keep getting answers that don’t seem right...
You know Z as it is given in the question. Remember Z* is just the Z but the imaginary number with the opposite sign, so sub this in then compare the real and imaginary
3. Substitute and simply compare coefficients.

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