Question 543200
4x^3/4 -31=77

4x^3/4=77+31
4x^3/4 =108

take the 4th power of the equation

(4x^(3/4))^4= 108)^4

256x^3=108^4

x^3=108^4/256

x^3=531441

x= cuberoot(531441)

x=81

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