SOLUTION: Solve by the quadratic formula 4 + 4x = 2x to 2nd power

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Question 142754: Solve by
the quadratic formula
4 + 4x = 2x to 2nd power
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4+4X=2X^2
2X^2-4X-4=0
2(X^2-2X-2)=0 x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
X=(2+-SQRT[-2^2-4*1*-2])/2*1
X=(2+-SQRT[4+8])/2
X=(2+-SQRT12)/2
X=(2+-3.4641)/2
X=(2+3.4641)/2
X=5.4641/2
X=2.73205 ANSWER.
X=(2-3.4641)/2
X=-1.4641/2
X=-.73205 ANSWER.