1 Tính:
a) \(\left(\frac{1}{5}\right)\)mũ 5 . 5mũ5 b) (0,125)mũ3 . 512 c) (0,25)mũ 4 . 1024
(0,125) mũ 3 . 512
(0,25)mũ 4 . 1024
\(\left(0,125\right)^3.512=\frac{1}{512}.512\)
\(=1\)
\(\left(0,25\right)^4.1024=\frac{1}{256}.1024\)
\(=\frac{1.4}{1.1}\)
\(=4\)
Tính:
a) \(\left(\frac{1}{5}\right)^5\) . 55
b) (0,125)3 . 512
c) (0,25)4 . 1024
a) (\(\frac{1}{5}\))5 . 55
b) (0,125) 3 . 512
c) (0,25) 4. 1024
A) (1/5)^5 . 5^5 = 1/5^5 . 5^5 = 5^5 / 5^5 = 1.
B)(0,125)^3 . 512 = (1/8)^3 . 512 = 1/8^3 . 512 = 1/512 . 512 = 1.
C) (0,25)^4 . 1024 = (1/4)^4 . 1024 = 1/4^4 . 1024 = 1/256 . 1024 = 4.
a/ \(\left(\dfrac{1}{7}\right)\)7 * 77
b/ (0,125)3* 512
c/ (0,25)4*1024
\(\left(\dfrac{1}{7}\right)^7\cdot7^7=\left(\dfrac{1}{7}\cdot7\right)^7=1^7=1\\ \left(0,125\right)^3\cdot512=\left(0,125\right)^3\cdot8^3=\left(0,125\cdot8\right)^3=1^3=1\\ \left(0,25\right)^4\cdot1024=\left(0,25\right)^4\cdot256\cdot4=\left(0,25\right)^4\cdot4^4\cdot4=\left(0,25\cdot4\right)^4\cdot4=1^4\cdot4=4\)
a) \(\left(\dfrac{1}{7}\right)^7.7^7=\left(\dfrac{1}{7}.7\right)^7=1^7=1\)
b) \(\left(0.125\right)^3.512=\left(0.125\right)^3.8^3=\left(0.125\cdot8\right)^3=1^3=1\)
c) \(\left(0.25\right)^4.1024=\left(0.25\right)^4.4^5=\left(0.25\right)^4.4^4.4=\left(0.25.4\right)^4.4=1^4.4=1.4=4\)
a) \(\left(\frac{1}{5}\right)^5.5^5\) b) (0,125)3 . 512 c) (0,25)4 . 1024
a) \(\left(\frac{1}{5}\right)^5.5^5=\frac{1^5}{5^5}.5^5=1^5=1\)
b) \(\left(0,25\right)^4.1024=\left(\frac{1}{4}\right)\text{ }^4.2^{10}=\frac{1^4}{4^4}.2^{10}=\frac{1}{\left(2^2\right)^4}.2^{10}=\frac{1}{2^8}.2^{10}=2^2=4\)
c) \(\left(0,125\right)^3.512=\left(\frac{1}{8}\right)^3.2^9=\frac{1^3}{8^3}.2^9=\frac{1}{\left(2^3\right)^3}.2^9=\frac{1}{2^9}.2^9=1\)
Tính:
a)\({\left( { - 2} \right)^2}.{\left( { - 2} \right)^3}\); b)\({\left( { - 0,25} \right)^7}:{\left( { - 0,25} \right)^5}\); c)\({\left( {\frac{3}{4}} \right)^4}.{\left( {\frac{3}{4}} \right)^3}.\)
a)\({\left( { - 2} \right)^2}.{\left( { - 2} \right)^3} = {\left( { - 2} \right)^{2 + 3}} = {\left( { - 2} \right)^5}\);
b)\({\left( { - 0,25} \right)^7}:{\left( { - 0,25} \right)^5} = {\left( { - 0,25} \right)^{7 - 5}} = {\left( { - 0,25} \right)^2} = {\left( {0,25} \right)^2}\);
c)\({\left( {\frac{3}{4}} \right)^4}.{\left( {\frac{3}{4}} \right)^3} = {\left( {\frac{3}{4}} \right)^{4 + 3}} = {\left( {\frac{3}{4}} \right)^7}.\)
Tính:
(1/5)^5 . 5^3(0,125)^3 . 512(0,25)^4 . 1024120^3/40^3390^3/130^4bài1: tính nhanh
a) (0,125) mũ 3 nhân 512
b) ( 0, 25) mũ 4 nhân 1024
mk cần gấp giúp mk vs
Bài 1:
a) \(\left(0,125\right)^3.512\)
\(=\left(0,125\right)^3.8^3\)
\(=1^3\)
\(=1.\)
b) \(\left(0,25\right)^4.1024\)
\(=\left[\left(0,25\right)^2\right]^2.32^2\)
\(=\left(0,0625\right)^2.32^2\)
\(=2^2\)
\(=4.\)
Chúc bạn học tốt!
a) (0,125)3.512=\(\frac{1}{8}\)3.512=\(\frac{1}{512}\).512=1
b)(0,25)4.1024=\(\frac{1}{4}\)4.1024=\(\frac{1}{256}\).1024=4
a, ( 0,125 )3 . 512
=( \(\frac{1}{8}\))3 . 512
= \(\frac{1}{512}\) . 512
= 1
b, ( 0,25) 4 . 1024
= \(\left(\frac{1}{4}\right)\)4 . 210
= \(\frac{1}{\left(2^2\right)^4}\). 210
= \(\frac{1}{2^8}\). 210
= 22
= 4