exam Maths Puzzle Numerical Ability

Solve and check each of the following equations for x.

(2)/(x+ 2)=(3)/(x+ 6)+(9)/(x^2 +8x+ 12)

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exam Other Question

Hi, I need some help on one of my questions. I need to make g the subject...

T = 2(pie)*[square root of l/g^3}

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so you have a cube that is x by x by x you slice a one inch slice off it and the remaining volume is 294 what is x