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# maths watch

1. how to solve (-8+5i)/(-2-4i) - (3+8i)/(1+2i) without a calculator?
2. First rationalise the denominators of each by multiplying by the complex conjugate.
3. In this case I would find a common denominator and re write it as one fraction and then multiply top and bottom of the conjugate if the denominator.
4. (Original post by B_9710)
In this case I would find a common denominator and re write it as one fraction and then multiply top and bottom of the conjugate if the denominator.
did the same but can't get the ans which is -4-5/2i

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