The vertex of this parabola is at (-2, 1). Which of the following could be its equation?

A.

x = 4 (y + 1) 2 - 2

B.

y = 4 (x - 2) 2 - 1

C.

x = 4 (y - 1) 2 - 2

D.

y = 4 (x - 2) 2 + 1

Simplify the following expression 20x^3y^2/5x^3y^5

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X^2-8xy+16y^2 factor completely

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