x^2=6/7x+135/49

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Solution for x^2=6/7x+135/49 equation: 


x in (-oo:+oo)

x^2 = (6/7)*x+135/49 // - (6/7)*x+135/49

x^2-((6/7)*x)-(135/49) = 0

x^2+(-6/7)*x-135/49 = 0

x^2-6/7*x-135/49 = 0

DELTA = (-6/7)^2-(-135/49*1*4)

DELTA = 576/49

DELTA > 0

x = ((576/49)^(1/2)+6/7)/(1*2) or x = (6/7-(576/49)^(1/2))/(1*2)

x = 15/7 or x = -9/7

x in { -9/7, 15/7 }

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