Answer:
3a^6, -2a^5, +1a^4
Explanation:
When multiplying exponents on the same variable just add them.
a^4(3a^2 - 2a + 1)
multiply a^4 to the a variable in all 3 terms:
a^4 x 3a^2 = 3a^6
a^4 x 2a = 2a^5
a^4 x 1 = 1a^4
The answer becomes 3a^6 - 2a^5 + 1a^4
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