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![](https://rs.olm.vn/images/avt/0.png?1311)
a) Ta có: \(19\cdot64+36\cdot19\)
\(=19\cdot\left(64+36\right)\)
\(=19\cdot100=1900\)
b) Ta có: \(150-\left[10^2-\left(14-11\right)^2\cdot2700^0\right]\)
\(=150-\left[100-3^2\cdot1\right]\)
\(=150-91\)
\(=69\)
c) Ta có: \(22^3-\left(1^{10}+8\right):3^2\)
\(=22^3-\left(1+8\right):3^2\)
\(=22^3-9:9\)
\(=22^3-1\)
\(=10647\)
d) Ta có: \(59-\left[90-\left(17-8\right)^2\right]\cdot1^{4514}\)
\(=59-\left[90-9^2\right]\cdot1\)
\(=59-\left(90-81\right)\)
\(=59-9=50\)
e) Ta có: \(7^2-36:3^2\)
\(=7^2-36:9\)
\(=49-4=45\)
![](https://rs.olm.vn/images/avt/0.png?1311)
A) 150-[102-(14-11)2 .20210
=150-[102-32.20210 ]
=150-[100-9.1]
=150-91
= 59
![](https://rs.olm.vn/images/avt/0.png?1311)
@tính bằng cách hợp lý a) 2^3-2^x3+2^3x88 b) 53x39+47x39-53x21-47x21 c) 1+2+3+.....+101+102 d) 5+8+11+14+.....+38+41 h) 51-49+55-53+59-57+63-61+65 k) 4^2x102-4^3x17-4^2x34 m) {[261-(36-31)^3x2]-9}x1001 n) [( 46-32)^2-(54-42)^2] x39-1872 i) [(58+72
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(41-\dfrac{72}{19-108:\left[59-2\left(3^2-11\cdot2\right)^2\right]}\)
\(=41-\dfrac{72}{19-108:\left[59-2\left(18-22\right)^2\right]}\)
\(=41-\dfrac{72}{19-108:\left[59-2\cdot16\right]}\)
\(=41-\dfrac{72}{19-108:27}\)
\(=41-\dfrac{72}{19-4}=41-\dfrac{72}{15}\)
=41-4,8
=36,2
\(41-72:\left\{19-108:\left[59-2.\left(3^2-11.2\right)^2\right]\right\}\)
\(=41-72:\left\{19-108:\left[59-2.\left(9-22\right)^2\right]\right\}\)
\(=41-72:\left\{19-108:\left[59-2.\left(-13\right)^2\right]\right\}\)
\(=41-72:\left\{19-108:\left[59-2.169\right]\right\}\)
\(=41-72:\left\{19-108:\left[59-338\right]\right\}\)
\(=41-72:\left\{19-108:-279\right\}\)
\(=41-72:\left\{19-\dfrac{-12}{31}\right\}\)
\(=41-72:\dfrac{601}{31}\)
\(=41-\dfrac{2232}{601}\)
\(=\dfrac{22409}{601}\)
lm ơn ik có ai giúp me ko me cần gấp
ai mà giúp tui thả tim hết dù đúng hay sai