tính phép tính: 2^2-(-3)^6+4^-2.16-2.5^2
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a: \(2^2\cdot5-\dfrac{\left(1^{10}+8\right)}{3^2}\)
\(=4\cdot5-\dfrac{1+8}{3}\)
=20-3
=17
b: \(5^8:5^6+4\left(3^2-1\right)\)
\(=5^2+4\left(9-1\right)\)
=25+4*8
=25+32
=57
c: \(400-\left\{36-20:\left[3^3-\left(8-3\right)\right]\right\}\)
\(=400-36+20:\left[27-5\right]\)
\(=364+\dfrac{20}{22}\)
\(=364+\dfrac{10}{11}=\dfrac{4014}{11}\)
A) 2².5 - (1¹⁰ + 8) : 3²
= 4.5 - (1 + 8) : 9
= 20 - 9 : 9
= 20 - 1
= 19
B) 5⁸ : 5⁶ + 4.(3² - 1)
= 5² + 4.(9 - 1)
= 25 + 4.8
= 25 + 32
= 57
C) 400 - {36 - 20 : [3³ - (8 - 3)]}
= 400 - [36 - 20 : (27 - 5)]
= 400 -(36 - 20 : 22)
= 400 - (36 - 10/11)
= 400 - 386/11
= 4014/11
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Câu hỏi 1:=111+1
=>112
Câu hỏi 2:=27+50
=>77
Câu hỏi 3:80-2
=>78
tích đúng nha bạn
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a) 43.27 - 43.23
= 43.(27-23)
= 43.4
= 44
b) 35.77+23.35+53.23
= 35.(77+23) + (5.2)3
= 35.100 + 103
= 35.102+ 102.10
= 102.(35+10)
= 100.45
= 4500
c) 32.5 + 23.10 - 81 : 3
= 9.5 + 8.2.5 - 27
= 5.(9+8.2) - 27
= 5.25 - 27
= 53 - 27
= 98
d) 151-291:288+13.3
= 151 - 23+3
= 151 - 8 + 3
= 146
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a) 32 . 53 + 92 = 9 . 125 + 81
= 1 125 + 81 = 1 206
b) 83 : 42 - 52 = 512 : 16 - 25 = 32 - 25 = 7
c) 33 . 92 - 52.9 + 18 : 6 = 27 . 81 - 25 . 9 + 3
= 2 187 - 225 + 3 = 1 962 + 3 = 1 965
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