Answer: X = sqrt[4]{\frac{36}{-34} }
Explanation:
First
you are going to plus all the common denominators.
3x + 6x + 8x = 17x
6 + 9 = 15
Second
then we get the following equation
15 + 17x + 9/2x + 12/x^2
Thirst
then you pass the 17x to the other side with subtraction sign
-17x = 15+ 9/2x + 12/x^2
fourth
after that, the values which are dividing pass to the other side multiplying
-17x . 2x . x^2 = 15+ 9 + 12
fifth
If we resolve the equation in both sides we get the next values
-34x^4 = 36
sixth
then pass the -34 to the other side dividing
x^4 = 36/-34
seventh
after that, pass the exponent of the (X) to the other side
X = sqrt[4]{\frac{36}{-34} }