2/3(x-6)x-9

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Solution for 2/3(x-6)x-9 equation: 


x in (-oo:+oo)

(2/3)*x*(x-6)-9 = 0

2/3*x*(x-6)-9 = 0

2/3*x*(x-6)-9 = 0

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

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

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

DELTA = (-4)^2-(-9*2/3*4)

DELTA = 40

DELTA > 0

x = (40^(1/2)+4)/(2/3*2) or x = (4-40^(1/2))/(2/3*2)

x = 3/4*(2*10^(1/2)+4) or x = 3/4*(4-2*10^(1/2))

(x-3/4*(4-2*10^(1/2)))*(x-3/4*(2*10^(1/2)+4)) = 0

(x-3/4*(4-2*10^(1/2)))*(x-3/4*(2*10^(1/2)+4)) = 0

( x-3/4*(2*10^(1/2)+4) )

x-3/4*(2*10^(1/2)+4) = 0 // + -3/4*(2*10^(1/2)+4)

x = -(-3/4*(2*10^(1/2)+4))

x = 3/4*(2*10^(1/2)+4)

( x-3/4*(4-2*10^(1/2)) )

x-3/4*(4-2*10^(1/2)) = 0 // + -3/4*(4-2*10^(1/2))

x = -(-3/4*(4-2*10^(1/2)))

x = 3/4*(4-2*10^(1/2))

x in { 3/4*(2*10^(1/2)+4), 3/4*(4-2*10^(1/2)) }

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