exam Maths Puzzle Numerical Ability

Solve for y: y^2 - 24y = -144

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exam Other Question

I would appreciate some help with this one.

1.A student writes down the following as part of her response: a ) 32 � 33 = 729. and b) 3 -2 = -9. Are her answers correct? If not, 1/5-2/x-1+3/x+2