7-x^3(1/2x)

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Solution for 7-x^3(1/2x) equation: 


x in (-oo:+oo)

7-((1/2)*x*x^3) = 0

(-1/2)*x^4+7 = 0

-1/2*x^4 = -7 // : -1/2

x^4 = 14

x^4 = 14 // ^ 1/4

abs(x) = 14^(1/4)

x = 14^(1/4) or x = -14^(1/4)

x in { 14^(1/4), -14^(1/4) }

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