Answer: x=±2/3
Step-by-step explanation:
The first thing we want to do is isolate the variable, x² in this case.
We can divide both sides by 9 which yields the equation x²=[tex]\frac{4}{9}[/tex].
Then we can take the square root of both sides, x=2/3.
Note: When the exponent is an even number both positive and negative x values will yield the same positive answer, so x=±2/3
