k^{2} + k - 42 k^{2} - k - 30

1 1 1-k 1 1 k-1

The denominators are:

1 and 1-k 1 and k-1

This means you need to get the denominator to be:

1-k k-1

In case you need help once you have the denominators. I will leave the original outside of parenthesis and the mulitplier inside. Remember you have to multiply both the top and bottom of a fraction if you are altering it in any way.

k^{2} (1-k) + k (1-k) - 42 k^{2} (k-1) - k (k-1) - 30

1 (1-k) 1 (1-k) 1-k 1 (k-1) 1 (k-1) k-1

This gives you:

k^{2} - k^{3} + k - k^{2} - 42 k^{3} - k^{2} - k^{2} - k - 30

1-k k-1

Simplify further and put into correct order:

-k^{3} + k - 42 k^{3} -2k^{2} - k - 30

1-k k-1

Nicole C.

I interpreted the problem differently than Danielle (above). I saw two totally different problems, she saw one. I hope between the two of us you were able to get the information you needed.

10/04/12