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Saturday, November 12, 2011

Solving for X


Student asks: How do I solve x^2-3x=4?

Solution: Move the 4 to the left, then factor x^2-3x-4=0 (x-4)(x+1)=0, the set each factor equal to zero and solve. x-4=0, x+1=0 x=4 or x=1
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