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4x^2-12x=7
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Explanation & Answer
4x^2-12x=7
4x^2-12x=7
4x^2-12x-7=0
4*7=2*2*7=2*(2*7)=2*14 and 14-2=12, the coefficient of the middle term
(2x )(2x )=0 so far...
(2x 1)(2x 7)=0 so far...
(2x+1)(2x-7)=0
2x+1=0
2x=-1
x=-1/2
2x-7=0
2x=7
x=7/2
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