1/4x^2-1/7x=1

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Solution for 1/4x^2-1/7x=1 equation: 


x in (-oo:+oo)

(1/4)*x^2-((1/7)*x) = 1 // - 1

(1/4)*x^2-((1/7)*x)-1 = 0

(1/4)*x^2+(-1/7)*x-1 = 0

1/4*x^2-1/7*x-1 = 0

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

DELTA = 50/49

DELTA > 0

x = ((50/49)^(1/2)+1/7)/(1/4*2) or x = (1/7-(50/49)^(1/2))/(1/4*2)

x = 2*((50/49)^(1/2)+1/7) or x = 2*(1/7-(50/49)^(1/2))

x in { 2*(1/7-(50/49)^(1/2)), 2*((50/49)^(1/2)+1/7) }

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