4x+5x/8*9x

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Solution for 4x+5x/8*9x equation: 


x in (-oo:+oo)

9*((5*x)/8)*x+4*x = 0

45/8*x^2+4*x = 0

DELTA = 4^2-(0*4*45/8)

DELTA = 16

DELTA > 0

x = (16^(1/2)-4)/(2*45/8) or x = (-16^(1/2)-4)/(2*45/8)

x = 0 or x = -32/45

x in { -32/45, 0 }

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