exam Maths Puzzle Numerical Ability

I have already asked this ? BUT I cannot seem to get the same answer.
The midpoint of AB is (3sqrt5,2sqrt3). If the coordinates of endpoint B are (-sqrt5,1/2sqrt3), then what are

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exam Other Question

Solve (1 + i) / (1 - i)

Note how parentheses have been added to make the numerator (1+i) and the denominator (1-i) which is what I think you intended. Solve the following system of linear inequalities by graphing.
x + 2y _< 3
2x - 3y_< 6