Answer:
A
Step-by-step explanation:
Answer is: Solve for x by simplifying both sides of the equation, then isolating the variable.
x = 20.2
2:5
2x^3-10x
2x^3/x -10x/x
2x^2-10
2x^2/2 - 10/2
x^2-5
x^2=5
=5