X^2-5x/4=8x/2

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Solution for X^2-5x/4=8x/2 equation: 


x in (-oo:+oo)

X^2-((5*x)/4) = (8*x)/2 // - (8*x)/2

X^2-((5*x)/4)-((8*x)/2) = 0

X^2+(-5/4)*x-4*x = 0

X^2-21/4*x = 0 // - X^2

-21/4*x = -X^2 // : -21/4

x = (-X^2)/(-21/4)

x = 4/21*X^2

x = 4/21*X^2

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