tính:(-0,8) mũ 4 nhân (-0,5) mũ 2 chia (-0,2) mũ 3
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(a.3^4=81;4^3=64;5^2=25;6^3=216\)
\(b.2^2\times2^3=32;3^3\times3=81;4^5\times4^2=16384\)
T ủng hộ mk nha ^....^
\(=\dfrac{\left(20\cdot16-12\cdot8-48\cdot4\right)^2}{-2^9}=\dfrac{2^{10}}{-2^9}=-2\)
\(c=2^3.5^3-\left\{7^2.2^3-5^2.\left[4^3::8+11^2:121-2\left(37-5.7\right)\right]\right\}\)
\(c=8.5-\left\{49.8-25.\left[8:8+121:121-2\left(37-5.7\right)\right]\right\}\)
\(c=8.5-\left\{49.8-25.\left[8:8+121:121-2\left(37-35\right)\right]\right\}\)
\(c=8.5-\left\{49.8-25.\left[8:8+121:121+2.2\right]\right\}\)
\(c=8.5-\left\{1+1+2.2\right\}\)
\(c=8.5-\left\{1+1+4\right\}\)
\(c=8.5-6\)
\(c=40-6\)
\(c=34\)
nhầm
\(c=2^3.5^3-\left\{7^2.2^3-5^2.\left[4^3:8+11^2:121-2\left(37-5.7\right)\right]\right\}\)
\(c=8.125-\left\{49.8-25.\left[8:8+121:121-2\left(37-35\right)\right]\right\}\)
\(c=8.125-\left\{49.8-25.\left[8:8+121:121-2.2\right]\right\}\)
\(c=8.125-\left\{49.8-25.\left[1+1-2.2\right]\right\}\)
\(c=8.125-\left\{49.8-25.\left[1+1-4\right]\right\}\)
\(c=8.125-\left\{49.8-25.-2\right\}\)
\(c=8.125-\left\{392+50\right\}\)
\(c=8.125-442\)
\(c=1000-442\)
\(c=558\)
Trả lời :
\(\frac{27^2}{25^3}\)
\(=\frac{729}{15625}\)
\(=0,46656\)
=\(\frac{\left(-2\right)^8}{5^4}\times\frac{\left(-1\right)^2}{2^2}\div\frac{\left(-1\right)^3}{5^3}\)
=\(\frac{2^8}{5^4}\times\frac{1}{2^2}\times\frac{-5^3}{1}\)
=\(\frac{-64}{5}\)