exam Maths Puzzle Numerical Ability

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3x-y=4
3x+2y=-17

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exam Other Question

-9 root 72 1)what are all solutions of
x^2+8x-6=0

2) what are all solutions of
3/4(x+1)^2=9

3) what are all solutions of
2/3(x-3)^2=4

4) What quadratic function represents a por