exam Maths Puzzle Numerical Ability

Solve

5(x-2)^2 = 3

I cannot figure out!

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exam Other Question

Hello,

What is the quotient of :

(5x^3 - 10x^2 - 5x) / (5x)

Thank you. In right triangle ACB (C is the right angle) CD is an altitude (D is between A and B). If AD=x^2 and BD=y^2, use Geometric Mean Theorems to find AC, BC, and CD interms of x and y (assume that x and y are positive)