x2-9/2x2-5x

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Solution for x2-9/2x2-5x equation: 


x in (-oo:+oo)

x^2-((9/2)*x^2)-(5*x) = 0

x^2+(-9/2)*x^2-5*x = 0

-7/2*x^2-5*x = 0

DELTA = (-5)^2-(-7/2*0*4)

DELTA = 25

DELTA > 0

x = (25^(1/2)+5)/(-7/2*2) or x = (5-25^(1/2))/(-7/2*2)

x = -10/7 or x = 0

x in { -10/7, 0 }

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