Multiply and simplify.
-$a ^ { - 9 } \cdot a ^ { 9 }$
A) 0
B) $\frac { 1 } { a ^ { 9 } }$
C) 1
D) $- 1$

Name: Multiply and simplify. -$a ^ { - 9 } \cdot a ^ { 9 }$ A) 0 B) $\frac { 1 } { a ^ { 9 } }$ C) 1 D) $- 1$
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Question

Quizplus · Accepted Answer

When multiplying powers with the same base, you add the exponents. Here, $a^{-9} \cdot a^9 = a^{-9+9} = a^0$, and any non-zero number raised to the power of 0 is 1.

Multiply and Simplify a−9⋅a9a ^ { - 9 } \cdot a ^ { 9 }a−9⋅a9

Multiply and Simplify $a ^ { - 9 } \cdot a ^ { 9 }$