\(a,=\dfrac{1}{8}.\dfrac{1}{16}=\dfrac{1}{128}\\ b,=\dfrac{16}{\dfrac{1}{512}.512}=\dfrac{16}{1}=16\\ c,=-\dfrac{1}{2187}.2187=-1\\ d,=\dfrac{1}{512}.512=1\)
\(^{c,\left(2^2\right)^{\left(2^2\right)}}\)
\(d,\frac{8^{14}}{4^{12}}\)
\(e,\frac{\left(-\frac{5}{7}\right)^{n+1}}{\left(-\frac{5}{7}\right)^n}\)với 0 lớn hơn hoặc bằng 1
\(g,\left(-\frac{1}{3}\right)^7.3^7\)
\(h,\left(0,125\right)^3.512\)
\(k,\frac{40^{10}.5^{10}}{75^{10}}\)
\(m,\frac{8^{10+4^{10}}}{8^4+4^{11}}\)
Tính: (0,125)3.512
Tính hợp lý :
0,125^3.512
bài 1 (-0,125)*7,9*80
(0,125)*15*0,25*8*(-4)
bài 2
x+8/32=1/9
x+8/5=x-2/3
37+x/3=3/7
Viết các biểu thức sau dưới dạng lũy thừa của một số hữu tỉ:
a) (0,125)3.512
Tính
a) \(\left(\frac{3}{7}\right)^{21}:\left(\frac{9}{49}\right)^6\)
b) \(\left(0,125\right)^3.512\)
c) \(\left(0,25\right)^4.1024\)
F= 0,125 - 1/5 +1/7 . 1/2 + 1/3 -0,2
0,375 - 3/5 =3/7 3/4 +0,5 - 3/10
a) \(\dfrac{5}{7}\)+\(\dfrac{3}{4}\).\(\dfrac{-11}{2}\)
b) (\(\dfrac{12}{17}\)+\(\dfrac{19}{7}\)) - (\(\dfrac{-5}{17}\)-\(\dfrac{3}{7}\))
c) (0,125)\(^{12}\).(-8)\(^{12}\)-\(\dfrac{45^3}{15^3}\)
d) \(5\dfrac{2}{7}\).(\(-\dfrac{1}{3}\))-\(2\dfrac{2}{7}\).(\(-\dfrac{1}{3}\))
e) \(\dfrac{9^2.9^3}{3^9}\)
1,tính hợp lí
a.3/5.(-8/3)-3/5:(-3/2)
b-5/6.-12/7-(-21/15)
c.0,125)650.8102
Tính
A.8^3×(0,125)^3
B.7^200×(1/7)^200
C.(0,25)^3×64
D.5^4×204/255×45
