SOLUTION: Multiply: 7u^6 * 4u^3 Multiple choice answers. A) 11u^9 B) 11u^18 C) 28u^18 D) 28u^9 I get 28u^18 is this right?

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: Multiply: 7u^6 * 4u^3 Multiple choice answers. A) 11u^9 B) 11u^18 C) 28u^18 D) 28u^9 I get 28u^18 is this right?      Log On


   

Question 70777: Multiply: 7u^6 * 4u^3
Multiple choice answers.
A) 11u^9
B) 11u^18
C) 28u^18
D) 28u^9
I get 28u^18 is this right?
Found 2 solutions by checkley75, tutorcecilia:
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
7U^6*4U^3
28U^9 ANSWER D)

Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
When multiplying exponents with like-bases, add the exponents:
%287u%5E6+%2A+4u%5E3%29
%287%2A4%2Au%5E%286%2B3%29%29
%2828u%5E9%29%29
.
When multiplying exponents that are RAISED TO A POWER, mutliply the exponents:
Example:
%287u%5E6%29%5E3%29
%287%5E3u%5E%286%2A3%29%29
%28343u%5E18%29%29