exam Maths Puzzle Numerical Ability

Can someone please help me with this: Radical equations, solve for x


((2x+1)^3/2)/((x-1)^2) + ((2x+1)^1/2)/((x-1) ) =0

This is what I have done so far:

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exam Other Question

Simplify. Write your answer with positive exponents only.
(b^2)-6 (to the negative 6th power) over b-4 (to the negative 4th power).

I am lost with this one. Please show step b
please help solve the following is a fraction


90 - 3/2n(fraction)=30