Answer:
14a^2
Step-by-step explanation:
3a^2+4a^2+7a^2
Combine like terms
Factor out a^2
a^2(3+4+7)
a^2(14)
14a^2
Show me what u are working on
Answer:

Step-by-step explanation:
combine like terms. not trying to be mean, but that all you have to do.
Step-by-step explanation:
<u>Raise c to the 3rd power:</u>

<u>Triple the amount</u><u> </u><u>(</u><u>Multiply</u><u> </u><u>by</u><u> </u><u>3</u><u>)</u><u>:</u>
