exam Maths Puzzle Numerical Ability

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sqrt7(2sqrt3+3sqrt7)

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exam Other Question

Given a= x(^1/2)- 4x(^-1/2). What is the value of 1/a^-2? A lever 12m long balances weights of 48 kg on one end and 24 kg on the other end. Find the lengths of the two arms of the lever.