28x-((16x^2)/7)=85

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Solution for 28x-((16x^2)/7)=85 equation: 


x in (-oo:+oo)

28*x-((16*x^2)/7) = 85 // - 85

28*x-((16*x^2)/7)-85 = 0

(-16/7)*x^2+28*x-85 = 0

28*x-16/7*x^2-85 = 0

DELTA = 28^2-(-85*(-16/7)*4)

DELTA = 48/7

DELTA > 0

x = ((48/7)^(1/2)-28)/(-16/7*2) or x = (-(48/7)^(1/2)-28)/(-16/7*2)

x = -7/32*((48/7)^(1/2)-28) or x = 7/32*((48/7)^(1/2)+28)

x in { -7/32*((48/7)^(1/2)-28), 7/32*((48/7)^(1/2)+28) }

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