SOLUTION: can you please help me with this problem? Factor each polynomial completely. a^2b+2ab-15b

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Question 304962: can you please help me with this problem?
Factor each polynomial completely.
a^2b+2ab-15b
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
a^2b+2ab-15b
b(a^2+2a-15)
b(a^2+5a-3a-15)
b{a(a+5)-3(a+5)}
b{(a-3)(a+5)}
b(a-3)(a+5)