- #1

- 42

- 0

^{2}so it will look like km(m+1) in the end.

I start by expanding the brackets:

km(m-1)+2m

^{2}

= km

^{2}-km+2m

^{2}

= km(m-1)+2m

^{2}(1)

or m(km-k+2m) (2)

or m

^{2}(2+k)-km (3)

Then I'm stuck. I've tried many other ways but they all become either (1) or (2) or (3) at the end. I have to find a way to get the final result as km(m+1), please help!