化简 2^{-8/5}*16^{-8/5}

解答

化简

2^{- \frac{8}{5}} \cdot 1 6^{- \frac{8}{5}}

\frac{1}{2 ^{\frac{3}{5}} \cdot 1 6 ^{\frac{3}{5}} \cdot 32}

十进制

0.00390625

求解步骤

2^{- \frac{8}{5}} \cdot 1 6^{- \frac{8}{5}}

2^{- \frac{8}{5}} = \frac{1}{2 \cdot 2 ^{\frac{3}{5}}}

= \frac{1}{2 \cdot 2 ^{\frac{3}{5}}} \cdot 1 6^{- \frac{8}{5}}

1 6^{- \frac{8}{5}} = \frac{1}{16 \cdot 1 6 ^{\frac{3}{5}}}

= \frac{1}{2 \cdot 2 ^{\frac{3}{5}}} \cdot \frac{1}{16 \cdot 1 6 ^{\frac{3}{5}}}

\frac{1}{2 \cdot 2 ^{\frac{3}{5}}} \cdot \frac{1}{16 \cdot 1 6 ^{\frac{3}{5}}} = \frac{1}{2 ^{\frac{3}{5}} \cdot 1 6 ^{\frac{3}{5}} \cdot 32}

= \frac{1}{2 ^{\frac{3}{5}} \cdot 1 6 ^{\frac{3}{5}} \cdot 32}

f a c t or 8 x^{2} - 4

9 (4) + 2 (- 5) = 13

s im pl i f y - 4 \cdot 2

1 - 2 [4 - 3 (x + 1)] = 4 (x - 5) - 1

x^{2} = 3 x - 1