How can I solve this?
1 Answer
D.
Explanation:
When you have negative exponents, you need to factor out the term with the smallest exponent.
In the numerator, it's
If you look at the second factor in the numerator, you can identify it as the cubic trinomial
Therefore, you can use this formula to simplify the second factor of the numerator.
Although they are written in different orders, the two right most factors in the numerator and denominator are the same. You can now cancel them out.
Last, you have one more factor that can be canceled out. You can do this by simplifying the first factor in the numerator.
Now you are left with this:
You can rewrite the first term into a fraction and then simplify.
If done correctly, you should get D as the right answer!