a) \(\left(7^5+7^9\right)\left(5^4+5^6\right)\left(3^3.3-9^2\right)=\left(7^5+7^9\right)\left(5^4+5^6\right)\left[3^4-\left(3^2\right)^2\right]=\left(7^5+7^9\right)\left(5^4+5^6\right)\left(3^4-3^4\right)=\left(7^5+7^9\right)\left(5^4+5^6\right).0=0\)
1) 1230 : 3(x - 20) = 10
2) [(52.23) – 72.2) : 2].6 – 7.25
3) 2x+1 - 2x = 32
4) 120 + 2.(3x - 17) = 214
5) 25< 2x< 3125
thực hiện phép tính
a, (35* 37) : 310+ 5 * 24- 73 : 7
b, (75+ 79)* (54+56)*((33*3-92)
bài 1: rút gọn
a, 73 . 75
b, 56. 54
Tính nhanh
a) (2^78+2^79+2^80) : (2^77+2^76+2^75)
b) (5^56+5^7) : (5^49+1)
1. -54+75-|-79-42|
2.2028- {[ 39 - 23.3-21]2 } :3+20170 }
3.47.134-47.35+47
4. -[-2017] +2789] + [1789 -2017 ]
5.369- [| -206| - 15] - [ -206 + |-369|
6. 345 - 150 : [{33 - 24}2 ] - [-21] + 20160
7.-2 +6 - 12 + 16 - 22 + 36 - ... - 92 + 96
-54+75-(-79-42)
a) (-79) - (-47) + 52 - (-4) . (-5)
b) 67 - (79 - 60) - 48 + ( -15)
c) (-2) ^3 . (-56 + 70) - (-17) . ( - 9 + 12)
d) 37 - (- 48) - 72 - (-6) . (-5)
a,56+54+56+54+56+54+56+54=???
b, Ảnh của mk là ai trong phim nào
đúng 2 câu mk tik cho
Thực hiện phép tính
1) 23+(-13) +(-50)
2)-5+15+(-123)
3)5871:{928-[(-82)+247)].5
4)40-(4.52-3.23)
5)4)62.5-72+149
6)-210:[16+3.(6+3.22)]+(-2022)
7)5.23+711:79-20230.18
8)400:{5.[360-(290+2.52)]}
9)75-(3.52) -4.53)
