Question

fill in the blank 1 point
8·34−3 =
answer
24÷6
(68·59)÷34
(76·(-4))÷(38·(21))
1/(16·21)
16÷(7)²
16÷7²
56÷(14·69)
7÷16
6÷(14·59)
(35·7)÷(21)⁰
6÷21
6÷24
(38·21)÷(76·(-4))

Explanation:

Step1: Rewrite negative exponent

Recall $a^{-n}=\frac{1}{a^n}$, so $21^{-4}=\frac{1}{21^4}$.

Step2: Express as product inverse

Note $8\cdot21^{-4}=8\cdot\frac{1}{21^4}=\frac{8}{21^4}$.

Answer:

$\frac{8}{21^4}$