2x^2-x-3/4x^2-9

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Solution for 2x^2-x-3/4x^2-9 equation: 


x in (-oo:+oo)

2*x^2-((3/4)*x^2)-x-9 = 0

2*x^2+(-3/4)*x^2-x-9 = 0

5/4*x^2-x-9 = 0

DELTA = (-1)^2-(-9*5/4*4)

DELTA = 46

DELTA > 0

x = (46^(1/2)+1)/(5/4*2) or x = (1-46^(1/2))/(5/4*2)

x = 2/5*(46^(1/2)+1) or x = 2/5*(1-46^(1/2))

x in { 2/5*(1-46^(1/2)), 2/5*(46^(1/2)+1) }

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