7/20x+9/4x^2

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Solution for 7/20x+9/4x^2 equation: 


x in (-oo:+oo)

(9/4)*x^2+(7/20)*x = 0

9/4*x^2+7/20*x = 0

DELTA = (7/20)^2-(0*9/4*4)

DELTA = 49/400

DELTA > 0

x = ((49/400)^(1/2)-7/20)/(2*9/4) or x = (-(49/400)^(1/2)-7/20)/(2*9/4)

x = 0 or x = -7/45

x in { -7/45, 0 }

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