exam Maths Puzzle Numerical Ability

Given the quadratic equation x^2+5x+3 whose roots are A and B, find without solving the roots, a quadratic equation with the values of:
1. 2A,2B
2. 3a-2, 3b-2
3. a+b, ab
4. a^2

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exam Other Question

Solve for X

5/x-(2x) /x+2 = (x squared +10x+8 /(x squared +2x)
I am having problem solving this question. Please kindly help me.

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