x^4/3+5x^2/3-36=0

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Solution for x^4/3+5x^2/3-36=0 equation: 


x in (-oo:+oo)

(x^4)/3+(5*x^2)/3-36 = 0

1/3*x^4+5/3*x^2-36 = 0

t_1 = x^2

1/3*t_1^2+5/3*t_1^1-36 = 0

1/3*t_1^2+5/3*t_1-36 = 0

DELTA = (5/3)^2-(-36*1/3*4)

DELTA = 457/9

DELTA > 0

t_1 = ((457/9)^(1/2)-5/3)/(1/3*2) or t_1 = (-(457/9)^(1/2)-5/3)/(1/3*2)

t_1 = 3/2*((457/9)^(1/2)-5/3) or t_1 = -3/2*((457/9)^(1/2)+5/3)

t_1 = -3/2*((457/9)^(1/2)+5/3)

x^2-(-3/2*((457/9)^(1/2)+5/3)) = 0

x^2+3/2*((457/9)^(1/2)+5/3) = 0

1*x^2 = -(3/2*((457/9)^(1/2)+5/3)) // : 1

x^2 = -3/2*((457/9)^(1/2)+5/3)

t_1 = 3/2*((457/9)^(1/2)-5/3)

x^2-(3/2*((457/9)^(1/2)-5/3)) = 0

x^2-3/2*((457/9)^(1/2)-5/3) = 0

1*x^2 = -(-3/2*((457/9)^(1/2)-5/3)) // : 1

x^2 = 3/2*((457/9)^(1/2)-5/3)

x^2 = 3/2*((457/9)^(1/2)-5/3) // ^ 1/2

abs(x) = (3/2)^(1/2)*((457/9)^(1/2)-5/3)^(1/2)

x = (3/2)^(1/2)*((457/9)^(1/2)-5/3)^(1/2) or x = -((3/2)^(1/2)*((457/9)^(1/2)-5/3)^(1/2))

x in { (3/2)^(1/2)*((457/9)^(1/2)-5/3)^(1/2), -((3/2)^(1/2)*((457/9)^(1/2)-5/3)^(1/2)) }

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