I do not under stand how you figure out what "a" is how do you figure it out?
asked Feb 1, 2013 in order of operations by anonymous

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1 Answer

2x(x-5) +4(x-5)=0

2x^2 -10x +4x -20=0

2x^2 -6x -20=0

x^2 -3x-10=0

(x-5)(x+2)=0
answered Feb 1, 2013 by anonymous

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