Thread: Quadratic Equations and the Null Factor Law
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Old November 8th, 2008, 11:34 PM
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Default Quadratic Equations and the Null Factor Law
x^2=x

I solved the equation as follows:

x^2-x=0

(x-\sqrt{x})(x+\sqrt{x})=0

\therefore x=+\sqrt{x},-\sqrt{x}

But my book says the answer is

x=0,1

How did they get that answer?
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