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\(75-\left(3.5^2-4.2^3\right)\)
\(=75-3.25+4.8\)
\(=75-75+32\)
\(=32\)
\(72:\left[32+\left(100-2^2.17\right):8\right]\)
\(=72:\left[32+\left(100-4.17\right):8\right]\)
\(=72:\left[32+\left(100-68\right):8\right]\)
\(=72:\left(32+32:8\right)\)
\(=72:\left(32+4\right)\)
\(=72:36\)
\(=2\)
a,\(75-\left(3.5^2-4.2^3\right)\)
\(=75-\left(3.25-4.8\right)=75-\left(75-32\right)\)
\(=75-75+32=32\)
b, \(4.5^2-3.2^3+3^3:3^2\)
\(=4.25-3.8+3=100-24+3=79\)
c, \(58.76+24.58-5.20\)
\(=58.\left(76+24\right)-100=58.100-100\)
\(=100.\left(58-1\right)=100.57=5700\)
d, \(\left[5^2.6-20\left(27-2^5\right)\right]:10-10^0\)
\(=\left[25.6-20.\left(27-32\right)\right]:10-1\)
\(=\left(26.6+20.5\right):10-1\)
\(=\left(156+100\right):10-1=256:10-1\)
\(=15,6-1=14,6\)
Chúc bạn học tốt!!!
1) 75 - (3 . 52 - 4 . 23)
= 75 - (3 . 25 - 4 . 8)
= 75 - (75 - 32)
= 75 - 75 + 32
= 32
2) 4 . 52 - 3 . 23 + 33 : 32
= 4 . 25 - 3 . 8 + 3
= 100 - 24 + 3
= 79
3) 58 . 76 + 24 . 58 - 5 . 20
= 58 . (76 + 24) - 100
= 58 . 100 - 100
= 5800 - 100
= 5700
\(5.2^2-18:3\)
\(=5.4-18:3\)
\(=20-6=14\)
\(2^3.17-2^3.14\)
\(=8.17-8.14\)
\(=8.\left(17-14\right)\)
\(=8.3\)
\(=24\)
\(75-\left(3.5^2-4.2^3\right)\)
\(=75-\left(3.25-4.8\right)\)
\(=75-\left(75-32\right)\)
\(=75-43\)
\(=32\)
\(150+50:5-2.3^2\)
\(=150+50:5-2.9\)
\(=150+10-18\)
\(=142\)
#Rảnh
\(5^2-\left(5.3^3-4.2^3\right).19=25-\left(135-32\right).19=25-103.19=25-1957=-1932\)
\(215-\left(5^2.2^3+700\right):3^2=215-\left(200+700\right):3^2=215-900:9=215-100=115\)
\(16.25+2^4.75=400+1200=1600\)
\(15.2^3+4.3^2-5.7=120+36-35=121\)
75 - (3 . 52 - 4 . 23)
= 75 - (3 . 25 - 4 . 8)
= 75 - (75 - 32)
= 75 - 75 + 32
= 0 + 32 = 32