SOLUTION: Hi there, I need help on this factor by grouping problem m2s - m2t - bs + bt thank you!

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Question 517521: Hi there, I need help on this factor by grouping problem
m2s - m2t - bs + bt

thank you!
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
grouping ___ (m2s - m2t) - (bs - bt) ___ when the -1 is distributed the sign of bt changes

factoring ___ m2(s - t) - b(s - t)

regrouping ___ (m2 - b)(s - t)