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\(=\dfrac{\left[\left(10.4+8.1\right)^2-6.5^2\right]:0.025}{576-336}+25+\dfrac{4}{3}-\dfrac{4}{3}\)
\(=\dfrac{3000}{240}+25=\dfrac{25}{2}+25=37.5\)
a/ \(\left(\frac{-2}{3}\right)^4:24=\frac{16}{81}:24=\frac{2}{243}\)
b/ \(\left(\frac{3}{4}\right)^3.4^4=\frac{27}{64}.256=108\)
c/ \(\frac{3.0,8^5}{2,4^4}=\frac{3.0,32768}{33,1776}=\frac{0,98304}{33,1776}=\frac{4}{135}\)
d/ \(\frac{3^3-0,9^5}{2,7^4}=\frac{27-0,59049}{53,1441}=\frac{26,40951}{53,1441}=0,4969415231\)
e/\(\left(\frac{-7}{2}\right)^2+\left(\frac{-3}{4}\right)^3.64-\left(\frac{-61}{5}\right)\)
\(=\frac{49}{4}+\frac{-27}{64}.64+\frac{61}{5}\)
\(=12,25-27+12,2\)
\(=-2,55\)
f/ \(\frac{2^4.2^6}{\left(2^5\right)^2}-\frac{2^5.15^3}{6^3.10^2}=\frac{2^{10}}{2^{10}}-\frac{2^5.5^3.3^3}{2^3.3^3.5^2.2^2}\)
\(=1-\frac{2^5.5^3.3^3}{2^5.3^3.5^2}=1-\frac{5}{1}=-4\)
\(\)
chúc bạn học tốt
Tìm x
\(2^{x+2}+2^{x+1}-2^x=40\)
\(\left(3-2x\right)\left(2,4+3x\right)\left(\frac{3}{2}-2x\right)=0\)
\(2^{x+2}+2^{x+1}-2^x=40\)
\(\Rightarrow2^x\left(2^2+2-1\right)=40\)
\(\Rightarrow2^x=8\)
\(\Rightarrow x=3\)
2x+2 + 2x+1 - 2x = 40
2x.22+2x.2-2x=40
2x.(4+2-1)=40
2x.5=40
2x=8
2x=23
x=3
vậy x=3
=\(\left(6.\frac{1}{4}+1+1\right):\left(\frac{-1}{2}-1\right)\)
=\(\frac{5}{2}\):\(\frac{\left(-3\right)}{2}\)=\(\frac{-10}{6}=\frac{-5}{3}\)
hok tốt
\(\left[6.\left(-\frac{1}{2}\right)^2-2.\left(-\frac{1}{2}\right)+1\right].\left(-\frac{1}{2}-1\right)\)
\(=\left(6.\frac{1}{4}-\left(-1\right)+1\right).\left(-\frac{3}{2}\right)\)
\(=\frac{3}{2}.\left(-\frac{3}{2}\right)\)
\(=-\frac{9}{4}\)
~Moon~
Q = 50
nhấn đúng cho mk nha
Ai bít giải chi tiết ra hk ạ????
Giúp e với !!!!!!Làm ơn làm phước, đúng e k cho mak TTTTTTTTT