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a)160-(23.52-6.25)
160-(1196-150)
160-1046
-886
b)4.52-32:24
208-4/3
620/3
c)5871:(928-(247-82).5)
5871:(928-165.5)
5871:(928-825)
5871:103
57
A, 160-(2^3.5^2-6.25)
160-50
=110
=> 110= 2.5.7
B,4.5^2-32:2^4
=4.25-32:16
=100-2
=98
=>98=2.7^2
Cau c mk giong kq vs bn tren
a: \(160-\left(2^3\cdot5^2-6\cdot25\right)\)
\(=160-\left(8\cdot25-150\right)\)
=160-(200-150)
=160-50
=110
\(=2\cdot5\cdot11\)
b: \(4\cdot5^2-32:2^4=4\cdot25-32:16=100-2=98=2\cdot7^2\)
c: \(5871:\left\lbrack928-\left(247-82\cdot5\right)\right\rbrack\)
\(=5871:\left\lbrack928-\left(247-410\right)\right\rbrack\)
=5871:[928-247+410]
=5871:1091
d: \(777:7+1331:11^3=111+1=112=2^4\cdot7\)
e: \(6^2:4\cdot3+2\cdot5^2=36:4\cdot3+2\cdot25\)
=27+50
=77
\(=7\cdot11\)
g: \(5\cdot4^2-18:3^2=5\cdot16-18:9=80-2=78=2\cdot3\cdot13\)
h: \(80-\left(4\cdot5^2-3\cdot2^3\right)=80-\left(4\cdot25-3\cdot8\right)\)
=80-(100-24)
=80-76
=4
=2^2
i: \(23\cdot75+25\cdot23+180\)
\(=23\left(75+25\right)+180\)
=2300+180
=2480
\(=2^4\cdot5\cdot31\)
k: \(2^4\cdot5-\left\lbrack131-\left(13-4\right)^2\right\rbrack\)
\(=16\cdot5-\left\lbrack131-81\right\rbrack\)
=80-50
=30
=2*3*5
m: 100:{250:[450-\(\left(4\cdot5^3-2^2\cdot25\right)\) ]}
=100:{250:[450-\(\left(4\cdot125-4\cdot25\right)\) ]}
=100:{250:[450-500+100]}
=100:{250:50}
=100:5
=20
=2^2*5
\(160-\left(2^3.5^2-6.25\right)\)
\(=160-\left(8.25-6.25\right)\)
\(=160-\left[\left(8-6\right).25\right]\)
\(=160-\left[2.25\right]\)
\(=160-50\)
\(=110\)
~ Hok tốt ~
a) \(160-\left(2^3.5^2-6.25\right)\)
\(=160-\left(8.25-6.25\right)\)
\(=160-\left(200-150\right)\)
\(=160-50\)
\(=110\)
110 2 55 5 11 11 1
\(110=2.5.11\)
b) \(4.5^2-32:2^4\)
\(=4.25-32:16\)
\(=100-2\)
\(=98\)
98 2 49 7 7 7 1
\(98=2.7^2\)
c) \(5371:\left[928-\left(247-82\right).5\right]\)
\(=5371:\left[928-165.5\right]\)
\(=5371:\left[928-825\right]\)
\(=5371:103\)
\(=\frac{5371}{103}\)
Vì đây là phân số nên ko thể phân tích ra thừa số nguyên tố đc
5871:[928-(247-82.5)
=5871:[928-(-163)]
=5871:1091
=5871/1091
5871:[928-(247-82.5)]
=5871:[928-(247-410)]
=5871:[928-(-163)]
=5871:(928+163)
=5871:1091
=5.381301558
=