exam Maths Puzzle Numerical Ability

For the equation x-2 times the square root of x = 0
Solve for all values of x that satisfies the equation.
Please break it down for me step by step. I am having such a hard time with this.

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exam Other Question
*Tutors could you help with this problem, it is: Use long division to find the quotient Q(x) and the remainder R(x) when P(x) is divided by d(x)

P(x)=x^4+2x^3-2x+4
d(x)=x-2 Decide whether the pair of lines is parallel,perpendicular, or neither

Please help me solve the equation: 4x+2y=5
2x-4y=1