exam Maths Puzzle Numerical Ability

what is the cordinates of the vertext in the parabola x^2+2x-8y+1=0

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exam Other Question

Given the following conditions, find the value of x and the measure of the indicated segment.
UV= x+6, UY=x-1; YV
Please explain how to work this problem Given that the volume of a cylinder is 150, and the radius of the cylinder is twice the height, find the surface Area of the cylinder.

I got 2766.75 as the answer but that is not correct