3x-12/3x=4x*x-9/4x*x-16x+15

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Solution for 3x-12/3x=4x*x-9/4x*x-16x+15 equation: 


x in (-oo:+oo)

3*x-((12/3)*x) = 4*x*x-((9/4)*x*x)-(16*x)+15 // - 4*x*x-((9/4)*x*x)-(16*x)+15

(9/4)*x*x-(4*x*x)+3*x-((12/3)*x)+16*x-15 = 0

(9/4)*x*x-4*x^2+3*x-4*x+16*x-15 = 0

15*x-7/4*x^2-15 = 0

DELTA = 15^2-(-15*(-7/4)*4)

DELTA = 120

DELTA > 0

x = (120^(1/2)-15)/(-7/4*2) or x = (-120^(1/2)-15)/(-7/4*2)

x = -2/7*(2*30^(1/2)-15) or x = -2/7*(-2*30^(1/2)-15)

x in { -2/7*(2*30^(1/2)-15), -2/7*(-2*30^(1/2)-15) }

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