exam Maths Puzzle Numerical Ability

Evaluate x^2y^3 / /x^2 + y^2 when x = 6 and y = -8.

CANT SHOW ANY WORK ON THIS ONE CUZ I HAVE NO CLUE???

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exam Other Question

How many real solutions does this equation have?
(x^2-9x+19)^(2x^3-x^2-10x)=1 find the length of a rectangle if it is four less than twice the width and the perimeter is 40 cm