If you cross-multiply, you get x2 = 9. There are now two ways to solve for x. Either:
1) Simply square root both sides. This leaves you with x = ±√9. Remember that when you are taking the square root while solving an equation, you must include both the positive and negative square roots...

To solve this equation, we need to get y alone on one side of the equal sign. To do this, we need to move the - 9 over to the left side. This means adding 9 to both sides of the equation.
11 = y - 9
+ 9 + 9
20 = y - 9 + 9
The - 9 and...

The polynomial you gave has two terms: the first is x3y2, and the second is -30x4. Using the definition you gave, the degree of the first term, x3y2, is 3 + 2 = 5, while the degree of the second term,
-30x4, is 4. Therefore, the degree of the entire polynomial is 5.
The definition says...