40x-1/2x^2750

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Solution for 40x-1/2x^2750 equation: 


x in (-oo:+oo)

40*x-((1/2)*x^2) > 750 // - 750

40*x-((1/2)*x^2)-750 > 0

(-1/2)*x^2+40*x-750 > 0

40*x-1/2*x^2-750 > 0

DELTA = 40^2-(-750*(-1/2)*4)

DELTA = 100

DELTA > 0

x = (100^(1/2)-40)/(-1/2*2) or x = (-100^(1/2)-40)/(-1/2*2)

x = 30 or x = 50

a = -1/2

a < 0

x in (30:50)

x in (30:50)

(30:50)

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