exam Maths Puzzle Numerical Ability

2x2 - 7x +3 = 0

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exam Other Question

This problem has been bothering me for a while now. I need help on how to solve it. It goes like this: If f(x)= 1-3x and g(x)= 1/ x^2 +1, find f(g(0)) and g(f(1)) 6x^3+12x^2-15x Please help. Thank u