Anyone who can display Latex correctly should be able to get the hang of algebra quickly.
Multiply the numbers (called numerical coefficients) together: 4 * 8 = 32
Now multiply the letters together. That is a bit harder. y * y
Two Rules
When a letter sits by itself, it is assumed to have a power of 1.
When two letters are multiplied together and the letters are the same the powers are added.
Answer
32