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a)\(568-\left\{5.\text{[}143-\left(4-1\right)^2\text{]}+10\right\}:10\)
\(=568-\left\{5.\left[143-3^2\right]+10\right\}:10\)
\(=568-\left\{5.134+10\right\}\text{ }\)
\(=568-\left(670+10\right)\)
\(=568-680\)
\(=-112\)
b)\(10^2-\left[60:\left(5^6:5^4-3\times5\right)\right]\)
\(=100-\left[60-\left(6^2-15\right)\right]\)
\(=100-\left(60-\left(36-15\right)\right)\)
\(=100-60-36+15\)
\(=19\)
\(a)\)\(568-\left\{5\left[143-\left(4-1\right)^2\right]+10\right\}\div10\)
\(=\)\(568-\left\{5\left[143-3^2\right]+10\right\}\div10\)
\(=\)\(568-\left\{5\left[143-9\right]+10\right\}\div10\)
\(=\)\(568-\left\{5.134+10\right\}\div10\)
\(=\)\(568-\left\{670+10\right\}\div10\)
\(=\)\(568-680\div10\)
\(=\)\(568-68\)
\(=\)\(500\)
\(b)\)\(10^2-\left[60\div\left(5^6\div5^4-3\times5\right)\right]\)
\(=\)\(10^2-\left[60\div\left(5^2-15\right)\right]\)
\(=\)\(10^2-\left[60\div\left(25-15\right)\right]\)
\(=\)\(10^2-\left[60\div10\right]\)
\(=\)\(100-6\)
\(=\)\(94\)
a) {[( 32 + 1 ) . 10 - ( 8 : 2 + 6 ) ] : 2 } + 55 -( 10 : 5 )3
= ( 10 . 10 - 10 : 2 ) + 55 - 6
= 90 : 2 ) + 55 - 6
= 45 + 55 - 6
= 100 - 6
= 94
b) 100 - [ 60 - ( 9 - 2 )2 ] . 32
= 100 - [ 60 - 72 ] . 9
= 100 - [ 60 - 49 ] . 9
= 100 - 11 . 9
= 100 - 99
= 1
c) [ ( 1253 ) . 75 - ( 175 )5 : 5 ] : 20162017
= 0 : 20162017
= 0
+ bài d kg hiểu! Xin lỗi
a)x=60+26=86
b)2x=4+12=16=>x=16:2=8
c)5^2x=5^10=>2x=10=>x=10:2=5
\(121-5.\left(60-5x\right)=21^{10}:\left(21^6.21^3\right)\)
\(121-5.\left(60-5x\right)=21^{10}:21^9\)
\(121-5.\left(60-5x\right)=21\)
\(5.\left(60-5x\right)=121-21\)
\(5.\left(60-5x\right)=100\)
\(60-5x=100:5\)
\(60-5x=20\)
\(5x=60-20\)
\(5x=20\)
\(\Rightarrow x=4\)
\(121-5.\left(60-5x\right)=21^{10}:\left(21^6.21^3\right)\)
\(121-300+25x=21^{10}:21^{11}\)
\(25x-179=\frac{1}{21}\)
\(25x=\frac{1}{21}+179\)
\(25x=\frac{3760}{21}\)
\(x=\frac{3760}{21}:25\)
\(x=\frac{752}{105}\)
vay \(x=\frac{752}{105}\)
(x + 5) . 52 + 10 = 60
=> (x + 5) . 25 = 60 - 10
=> (x + 5) . 25 = 50
=> x + 5 = 50 : 25
=> x + 5 = 2
=> x = 2 - 5
=> x = -3
Vậy x bằng - 3
( x + 5 ) . 52 + 10 = 60
=> ( x + 5 ) . 52 = 50
=> x + 5 = 50 : 25
=> x + 5 = 2
=> x = 2 - 5
=> x = -3
Vậy....
~HT~