a: =32,125-6,325-12,125-37-13,675
=20-37-20=-37
b: =4,75-0,125+0,25+1,125
=5+1=6
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c,\(2021,2345\cdot2020,1234+2021,2345\cdot\left(-2020,1234\right)\)
d,\(4,75+\left(\dfrac{-1}{2}\right)^3+0,5^2-3\cdot\dfrac{-3}{8}\)
a, \(12,4\cdot6\dfrac{1}{4}+\left(-12,4\right)\cdot\left(-2,5\right)^2\)
b, \(32,125-\left(6,325+12,125\right)-\left(37+13,675\right)\)
15 tháng 10 2023 lúc 16:09
tính một cách hợp lí
C=2021,2345.2020,1234+2021,2345.(-2020,1234)
Bài 1:
a,3^7 : 3^5- left(dfrac{5}{17}right)^0 b,left(dfrac{5}{2}right)^{13} : left(dfrac{1}{2}+2right)^3 c, 8.left(dfrac{1}{4}right)^3 +left(dfrac{2}{27}right)^0 - dfrac{1}{8}
Bài 2 :
a, dfrac{3^4.4^4}{6^4} b,dfrac{15^3}{10^3} c, dfrac{4^2.12^5}{9^2.2^{10}} d, dfrac{6^2+5.2^2+4}{15}
Bài 3 :
a, dfrac{left(dfrac{2}{3}right)^3.left(dfrac{-3}{4}right)^2.left(-1right)^5}{left(dfrac{2}{5}right)^2.left(dfrac{-5}{12}right)^2} b,dfrac{6^6+6^3.3^3+3^6}{-73}
Mọi người giúp mình nhé mình sẽ ch...
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Bài 1:
a,\(3^7\) : \(3^5\)- \(\left(\dfrac{5}{17}\right)^0\) b,\(\left(\dfrac{5}{2}\right)^{13}\) : \(\left(\dfrac{1}{2}+2\right)^3\) c, 8.\(\left(\dfrac{1}{4}\right)^3\) +\(\left(\dfrac{2}{27}\right)^0\) - \(\dfrac{1}{8}\)
Bài 2 :
a, \(\dfrac{3^4.4^4}{6^4}\) b,\(\dfrac{15^3}{10^3}\) c, \(\dfrac{4^2.12^5}{9^2.2^{10}}\) d, \(\dfrac{6^2+5.2^2+4}{15}\)
Bài 3 :
a, \(\dfrac{\left(\dfrac{2}{3}\right)^3.\left(\dfrac{-3}{4}\right)^2.\left(-1\right)^5}{\left(\dfrac{2}{5}\right)^2.\left(\dfrac{-5}{12}\right)^2}\) b,\(\dfrac{6^6+6^3.3^3+3^6}{-73}\)
Mọi người giúp mình nhé mình sẽ cho bạn 1 like
Tính giá trị của các biểu thức sau :
a)left(7+3dfrac{1}{4}-dfrac{3}{5}right)+(0,4 - 5) - left(4dfrac{1}{4}-1right)
b)dfrac{2}{3} - left[left(-dfrac{7}{4}right)-left(dfrac{1}{2}+dfrac{3}{8}right)right]
c)left(9-dfrac{1}{2}-dfrac{3}{4}right):left(7-dfrac{1}{4}-dfrac{5}{8}right)
d)3 - dfrac{1-dfrac{1}{7}}{1+dfrac{1}{7}}
giúp mình nhé trả lời mình cho tick cảm ơn các bạn !
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Tính giá trị của các biểu thức sau :
a)\(\left(7+3\dfrac{1}{4}-\dfrac{3}{5}\right)\)+(0,4 - 5) - \(\left(4\dfrac{1}{4}-1\right)\)
b)\(\dfrac{2}{3}\) - \(\left[\left(-\dfrac{7}{4}\right)-\left(\dfrac{1}{2}+\dfrac{3}{8}\right)\right]\)
c)\(\left(9-\dfrac{1}{2}-\dfrac{3}{4}\right)\):\(\left(7-\dfrac{1}{4}-\dfrac{5}{8}\right)\)
d)3 - \(\dfrac{1-\dfrac{1}{7}}{1+\dfrac{1}{7}}\)
giúp mình nhé trả lời mình cho tick cảm ơn các bạn !
Tìm x a,3-xx+1,8b,2x-57x+35c,2left(x+10right)3left(x-6right)d,8left(x-dfrac{3}{8}right)+16left(dfrac{1}{6}+xright)+xe,dfrac{2}{9}-3xdfrac{4}{3}-xg,dfrac{1}{2}x+dfrac{5}{6}dfrac{3}{4}x-dfrac{1}{2}h,x-4dfrac{5}{6}left(6-dfrac{6}{5}xright)k,7x^2-116x^2-2m,5left(x+3.2^3right)10^2n,dfrac{4}{9}-(dfrac{1}{6^2})dfrac{2}{3}left(x-dfrac{2}{3}right)^2+dfrac{5}{12}
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Tìm x
\(a,3-x=x+1,8\)
\(b,2x-5=7x+35\)
\(c,2\left(x+10\right)=3\left(x-6\right)\)
\(d,8\left(x-\dfrac{3}{8}\right)+1=6\left(\dfrac{1}{6}+x\right)+x\)
\(e,\dfrac{2}{9}-3x=\dfrac{4}{3}-x\)
\(g,\dfrac{1}{2}x+\dfrac{5}{6}=\dfrac{3}{4}x-\dfrac{1}{2}\)
\(h,x-4=\dfrac{5}{6}\left(6-\dfrac{6}{5}x\right)\)
\(k,7x^2-11=6x^2-2\)
\(m,5\left(x+3.2^3\right)=10^2\)
\(n,\dfrac{4}{9}-(\dfrac{1}{6^2})=\dfrac{2}{3}\left(x-\dfrac{2}{3}\right)^2+\dfrac{5}{12}\)
Tìm x:a) dfrac{2}{3}+left(x-dfrac{1}{2}right)^3dfrac{19}{27}b) left(dfrac{3}{2}right)^{2x-1}:left(dfrac{27}{8}right)^3dfrac{81}{16}c) dfrac{1}{2}.2^x+4.2^x9.2^5d) text{12 - (2x +1)}^2-69
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Tìm x:
\(a\)) \(\dfrac{2}{3}+\left(x-\dfrac{1}{2}\right)^3=\dfrac{19}{27}\)
\(b\)) \(\left(\dfrac{3}{2}\right)^{2x-1}:\left(\dfrac{27}{8}\right)^3=\dfrac{81}{16}\)
\(c\)) \(\dfrac{1}{2}.2^x+4.2^x=9.2^5\)
\(d\)) \(\text{12 - (2x +1)}^2=-69\)
1, Tính hợp líAdfrac{0.5+dfrac{7}{12}-dfrac{5}{6}}{1-dfrac{2}{3}+0,75}B-66.left(dfrac{1}{2}-dfrac{1}{3}+dfrac{1}{11}right)+124.left(-37right)+126.left(-62right)Nleft(60dfrac{7}{13}+50dfrac{8}{13}-11.dfrac{2}{13}right)x (Với x-2017dfrac{7}{10})Mleft(1-dfrac{2}{2.3}right).left(1-dfrac{2}{3.4}right).left(1-dfrac{2}{4.5}right).....left(1-dfrac{2}{99.100}right)
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1, Tính hợp lí
\(A=\dfrac{0.5+\dfrac{7}{12}-\dfrac{5}{6}}{1-\dfrac{2}{3}+0,75}\)
\(B=-66.\left(\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{11}\right)+124.\left(-37\right)+126.\left(-62\right)\)
\(N=\left(60\dfrac{7}{13}+50\dfrac{8}{13}-11.\dfrac{2}{13}\right)x\) (Với \(x=-2017\dfrac{7}{10}\))
\(M=\left(1-\dfrac{2}{2.3}\right).\left(1-\dfrac{2}{3.4}\right).\left(1-\dfrac{2}{4.5}\right).....\left(1-\dfrac{2}{99.100}\right)\)
a) 4.left(-dfrac{1}{2}right)^3-2.left(-dfrac{1}{2}right)^2+3.left(-dfrac{1}{2}right)+1
b) 8.sqrt{9}-sqrt{64}
c) sqrt{dfrac{9}{16}}+dfrac{25}{46}:dfrac{5}{23}-dfrac{7}{4}
đung cho 5 sao
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a) \(4.\left(-\dfrac{1}{2}\right)^3\)\(-2.\left(-\dfrac{1}{2}\right)^2\)+\(3.\left(-\dfrac{1}{2}\right)\)+1
b) \(8.\sqrt{9}\)\(-\sqrt{64}\)
c) \(\sqrt{\dfrac{9}{16}}\)\(+\dfrac{25}{46}\)\(:\dfrac{5}{23}\)\(-\dfrac{7}{4}\)
đung cho 5 sao
Tính:
a) \(\sqrt{\dfrac{9}{16}}-\dfrac{5}{6}+\dfrac{3}{2}\) b) \(\left(\dfrac{1}{9}+\dfrac{2}{3}\right)^2-\dfrac{5}{3}:\sqrt{25}\)
c)\(\dfrac{5}{11}.\left(-\dfrac{3}{7}\right)+\dfrac{5}{11}.\left(\dfrac{-5}{7}\right)+\left(-\dfrac{8}{7}\right).\dfrac{6}{11}\)
d) \(\dfrac{2^8.2^{18}}{8^5.4^6}\)