174:{2[36+(4^2-23)]}
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=174:{2[36+(16-23)]}
=174:{2[36+(-7)]}
=174:{2x29}
=174:58
=3
174 : {2.[36 + (44 - 23)]}
= 174 : {2.[36+(-7)]}
= 174 : {2. 29}
= 174 : 58
= 3
Ta có 174 : {2.[36 + (42 - 23)]}
= 174 : {2.[36 + (-7)]}
= 174 : (2 . 29)
= 174 : 58
= 3
\(27.77+24.27-27\)
\(=27.\left(77+24-1\right)\)
\(=27.100\)
\(=2700\)
\(174\div\left\{2\left[36+\left(4^2-23\right)\right]\right\}\)
\(=174\div\left\{2\left[36+\left(16-23\right)\right]\right\}\)
\(=174\div\left\{2\left[36+\left(-7\right)\right]\right\}\)
\(=174\div\left\{2.29\right\}\)
\(=174\div58\)
\(=3\)
\(3^2.4-\left[30-\left(5-2\right)^2\right]\)
\(=9.4-\left[30-3^2\right]\)
\(=36-\left[30-9\right]\)
\(=36-21\)
\(=15\)
c) \(174:\left\{2.\left[36+\left(4^2-23\right)\right]\right\}\)
\(=174:\left\{2.\left[36-7\right]\right\}\)
\(=174:\left[2.29\right]\)
\(=174:58\)
\(=3\)
=174/{2[36+(16-23)]}
=174/{2[36+(-7)]}
=174/{2*19}
=174/38
=87/19
\(a,3^3+3^2-\left(2^7:2^5+7^8:7^7\right)=27+9-\left(2^2+7\right)=36-11=25\)
\(b,27.77+27.27-27=27\left(77+27-1\right)=27.103=2781\)
\(c,52:\left(43-30\right)+144-16=52:13+128=4+128=132\)
\(f,3^2.101-3^2.101^0=3^2\left(101-101^0\right)=9\left(101-1\right)=9.100=900\)
1) \( 2155 – (174 + 2155) + (-68 + 174) = -68\) 2) \(-25 . 72 + 25 . 21 – 49 . 25=-2500\) 3) \(35.(14 –23) – 23.(14–35)=168\) 4) \(8154 – (674 + 8154) + (–98 + 674)=-98\) 5) \(25.21+25.72+49.25=2399\) 6) \(27.(13-16)-16.(13-27)=143\) 7) \(–1911 – (1234 – 1911) =-1234\) |
174:{2[36+(4^2-23)]}
=174:{2[36+(-7)]}
=174:{2.29}
=174:58
=3
\(174:\left\{2.\left[36+\left(4^2-23\right)\right]\right\}\)
\(=174:\left\{2.\left[36+\left(16-23\right)\right]\right\}\)
\(=174:\left\{2.\left[36+\left(-7\right)\right]\right\}\)
\(=174:\left\{2.29\right\}\)
\(=174:58\)
\(=3\)