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\(=\left(\dfrac{0,8}{0,4}\right)^5\cdot\dfrac{1}{0,4}=2^5\cdot\dfrac{1}{0,4}=\dfrac{32}{0,4}=80\)
Giải:
\(\dfrac{\left(0,8\right)^5}{\left(0,4\right)^6}\)
= \(\left(\dfrac{0,8}{0,4}\right)^5.\dfrac{1}{0,4}\)
= \(2^5.\dfrac{1}{0,4}\)
= \(\dfrac{32}{0,4}=80\)
Hok tốt
a) (0.8)^5:(0,4)^6
=(0,4)^10:(0,4)^6
= (0,4)^4
b) (0,125)^3*512
= 1
c)45^10*5^20/75^15
=243
d) 2^15*9^4/6^6*8^3
=2359296
nhận đúng cho mk nha
=\(\left[\dfrac{\left(0,4.2\right)^5}{\left(0,4\right)^6}+\dfrac{2^9.2^6.3^8}{\left(3.2\right)^6.2^9}\right]=\left[\dfrac{\left(0,4\right)^5.2^5}{\left(0,4\right)^6}+\dfrac{2^6.3^8}{3^6.2^6}\right]\)
=\(\left[\dfrac{2^5}{0,4}+3^2\right]\)
=\(\left[80+9\right]=89\)
\(\left[\dfrac{\left(2.0,4\right)^5}{0,4,0,4^5}+\dfrac{2^{15}.3^8}{3^6.2^6.2^9}\right]\div\dfrac{3^{20}.5^{30}}{3^{15}.5^{30}}\)
\(=\left[\dfrac{2^5.0.4^5}{0,4.0,4^5}+\dfrac{2^{15}.3^8}{3^6.2^{15}}\right]\div3^5\)
\(=\left[\dfrac{2^5}{0,4}+3^2\right]\div243\)
\(=80+\left(3^5\div3^2\right)\)
\(=80+3^3\)
\(=80+27\)
\(=107\)
\(\frac{0,8^5}{0,4^6}\)
\(=\frac{0,8.0,8.0,8.0,8.0,8}{0,4.0,4.0,4.0,4.0,4.0,4}\)
\(=\frac{32}{1.0,4}\)
\(=80\)
chúc bạn học tốt!!!
a: =160
b: =0,5x0,7=0,35
c: =-0,8x0,006=-3/625
d: =0,2x(-0,2)=-0,04
(0,8)\(^5\) : (0,4)\(^6\) = ((0,2)\(^3\))\(^5\) : ((0,2)\(^2\))\(^6\) = (0,2)\(^{15}\) : (0,2)\(^{12}\) = (0,2)\(^3\) = 0,8
\(\left(0,8\right)^5:\left(0,4\right)^6=\left(\dfrac{4}{5}\right)^5.\left(\dfrac{5}{2}\right)^6=\dfrac{2^8}{5^5}.\dfrac{5^6}{2^6}=\dfrac{4}{1}.\dfrac{5}{1}=20\)