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x^2-2x+5x-10= 8x-4
x^2-2x+5x-8x= 10-4
x^2-5x=6
x^2-5x-6=0
x= {-(-5)+-sqrt[(-5)^2 - 4(1)(-6)]}/2(1)
x= [5+-sqrt(25+24)] /2
x= [5+-sqrt(49)] /2
x= (5+-7)/2
x1= (5+7)/2 x2= (5-7)/2
x1= 12/2 x2= -2/2
x1= 6 x2= -1