90x-(9/2)x^2=0

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Solution for 90x-(9/2)x^2=0 equation: 


x in (-oo:+oo)

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

(-9/2)*x^2+90*x = 0

90*x-9/2*x^2 = 0

DELTA = 90^2-(-9/2*0*4)

DELTA = 8100

DELTA > 0

x = (8100^(1/2)-90)/(-9/2*2) or x = (-8100^(1/2)-90)/(-9/2*2)

x = 0 or x = 20

x in { 0, 20 }

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