Thread: Algebra Factorisation and Equations
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Old November 5th, 2008, 11:56 PM
thisisme thisisme is offline
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Either x+1=0 or x-4=0. Solve these to get x=-1 and x=4.

b^2-16=(b-4)(b+4)

This is obtained from the difference of 2 squares, if you don't know this yet then look it up and learn it.
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