exam Maths Puzzle Numerical Ability

Simplify
(4x^2 y^-1) squared (2x^-1y2) cubed
__ . _
(3x^-1y) (9x^-2 y2)

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exam Other Question

need help solving for "X"
thanks in advance
100.9232 = (6/1.05) + (106/((1+X)^2))
c/c+1 minus 4/c+4 plus 3/c�+5c+4