17. If x doesn't equal zero and x= root(4xy-4y^2), then, in terms of y, x=
A) 2y
B) y
C) y/2
D)(-4y^2)/(1-4y)
E) -2y
Answer is A. I can find the answer by subbing-in but having more trouble finding it algebraicly. Can anyone help?
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A) 2y
B) y
C) y/2
D)(-4y^2)/(1-4y)
E) -2y
Answer is A. I can find the answer by subbing-in but having more trouble finding it algebraicly. Can anyone help?
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