(4x4+8x2+9)/4x

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Solution for (4x4+8x2+9)/4x equation: 


x in (-oo:+oo)

x*((4*x^4+8*x^2+9)/4) = 0

(x*(4*x^4+8*x^2+9))/4 = 0

x = 0

(4*x^4+8*x^2+9)/4 = 0

(4*x^4+8*x^2+9)/4 = 0 // * 4

4*x^4+8*x^2+9 = 0

t_1 = x^2

4*t_1^2+8*t_1^1+9 = 0

4*t_1^2+8*t_1+9 = 0

DELTA = 8^2-(4*4*9)

DELTA = -80

DELTA < 0

x*((4*x^4+8*x^2+9)/4) = 0  <=>  x = 0 or x*((4*x^4+8*x^2+9)/4) = 0  <=>  (4*x^4+8*x^2+9)/4 = 0

x = 0

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