Saturday
April 25, 2015

Homework Help: Math

Posted by Sally on Sunday, April 14, 2013 at 7:57am.

Null factor law and factoriising:
2x^2+7x=0
X(2x+7)=0
X=0 or 2x+7=0. ( the answer in the book was x=-7/2, how?

And. X^2-4=2x-4
Is it x^2-4-2x+4=o ??? If so!' how do I continue?

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