exam Maths Puzzle Numerical Ability

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Page 526
Number 20

I have to simplify and assume that all variables represent positive numbers...

square root w^14

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exam Other Question

Tutors please help me????

Use the rational zeros theorem to list all possible rational zeros of
P(x)=3x^3-5x^2+4x-2
Can you help me solve this problem? I do not know how to rationalize a denominator if it has 3 radicals, like this problem: 1 divided by square root of 2 plus square root of five