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12 votes
Write with a single exponent, 9^2(12^3)(2)

User Yanet
by
6.8k points

2 Answers

7 votes

Answer:


6^7

Explanation:


9^2(12^3)(2)


\mathsf{rewrite \ 9 \ as \ 3^2 } \implies 9^2=(3^2)^2

Apply exponent rule
(a^b)^c=a^(bc):


\implies (3^2)^2=3^4


\mathsf{rewrite \ 12 \ as \ 2 \cdot 2 \cdot 3 } \implies 12^3=(2 \cdot 2 \cdot 3)^3

Apply exponent rule
(a\cdot b)^c=a^c \cdot b^c


\implies (2 \cdot 2 \cdot 3)^3=2^3 \cdot 2^3 \cdot 3^3


\mathsf{rewrite \ 2 \ as \ 2^1}

Therefore,


9^2(12^3)(2)=3^4 \cdot2^3\cdot2^3\cdot3^3\cdot2^1

Gather like terms


\implies 3^4\cdot3^3 \cdot2^3\cdot2^3\cdot2^1

Apply exponent rule
a^b \cdot a^c=a^(b+c):


\implies 3^(4+3)\cdot2^(3+3+1)


\implies 3^7 \cdot 2^7

Apply exponent rule
a^c \cdot b^c=(ab)^c


\implies (3 \cdot2)^7


\implies 6^7

User Mark Wenzel
by
8.3k points
2 votes
9^2(12^3)(2)
81(1728)(2)
81(3456)
279,936

279,936 is equivalent to 6^7

Hope this helps!
User Timfjord
by
8.3k points

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