Answer:
the answer is 15a+12ac+6ab
Explanation:
3a(5+4c+2b)
(3a)(5+4c+2b)
(3a)(5)+(3a)(4c)+(3a)(2b)
15a+12ac+6ab
6ab+12ac+15a
hope this helps!
I think it is b
it is 3a times all of the numbers in parenthases
hope you pass your test
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