Answer
No, I do not agree with my friend.
Work Step by Step
My friend added the terms $3$ and $4$ instead of multiplying them. This caused him to arrive at the answer $7a^7$ instead of the correct answer, $12a^7$.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 7 - Exponents and Exponential Functions - 7-3 Multipying POwers with the Same Base - Lesson Check - Page 429: 7
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