exam Maths Puzzle Numerical Ability

Can you please help me out with this equation?
y=-1(x-3)(x+1)

thank you very much

alyssa

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exam Other Question

2x2 = 3y2 + 5 , x - 3 + 5 = 0 the sum of the digits of a two digit number is 10. if the digits were reversed, the new number would be 54 less than the original number. find the original number.