-8x*25-1/5x*7x

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Solution for -8x*25-1/5x*7x equation: 


x in (-oo:+oo)

-(7*(1/5)*x*x)-8*25*x = 0

(-7/5)*x^2-8*25*x = 0

-7/5*x^2-200*x = 0

DELTA = (-200)^2-(-7/5*0*4)

DELTA = 40000

DELTA > 0

x = (40000^(1/2)+200)/(-7/5*2) or x = (200-40000^(1/2))/(-7/5*2)

x = -1000/7 or x = 0

x in { -1000/7, 0 }

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