Answers

2016-06-27T20:49:52+08:00
= m² - 3m + 6m-18

= m² + (-3m+6m) -18

Then Simplify...

= m² + 3m - 18
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2016-06-27T20:56:06+08:00
M(m-3) + 6(m-3) = m-3 (m+6)
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I just simply used the distributive property. (Not sure but that's our lesson awhile ago and I was kinda sleepy, sorry.)