Các câu hỏi tương tự
(12/25)^x=(5/3)^-2-(-3/5)^4
(12/25)^x=144/625
(12/25)^x=(12/25)^2
=>x=2
2^12 × 3^4 × (3 - 1)
2^12×3^5×(3-1)
14 tháng 9 2021 lúc 10:30
Tính:
\(\dfrac{3}{12}-\left(\dfrac{6}{12}-\dfrac{3}{10}\right)\)
tinh nhanh
(11/12-8/3+1/12-1/3) chia 2/3
Rút gọn
1+3^4+3^8+3^12/1+3^2+3^4+3^6+3^8+3^10+3^12+3^14
1+3^4+3^8+3^12/1+3^2+3^4+3^6+...+3^12+3^14
tính nha
Rút gọn
;
A=1+3^4+3^8+3^12/1+3^2+3^4+3^6+3^8+3^10+3^12
a) dfrac{5}{7}+dfrac{3}{4}.dfrac{-11}{2}b) (dfrac{12}{17}+dfrac{19}{7}) - (dfrac{-5}{17}-dfrac{3}{7})c) (0,125)^{12}.(-8)^{12}-dfrac{45^3}{15^3}d) 5dfrac{2}{7}.(-dfrac{1}{3})-2dfrac{2}{7}.(-dfrac{1}{3})e) dfrac{9^2.9^3}{3^9}
Đọc tiếp
a) \(\dfrac{5}{7}\)+\(\dfrac{3}{4}\).\(\dfrac{-11}{2}\)
b) (\(\dfrac{12}{17}\)+\(\dfrac{19}{7}\)) - (\(\dfrac{-5}{17}\)-\(\dfrac{3}{7}\))
c) (0,125)\(^{12}\).(-8)\(^{12}\)-\(\dfrac{45^3}{15^3}\)
d) \(5\dfrac{2}{7}\).(\(-\dfrac{1}{3}\))-\(2\dfrac{2}{7}\).(\(-\dfrac{1}{3}\))
e) \(\dfrac{9^2.9^3}{3^9}\)
-7/12 x 3/8 + -7/12 x 5/8 + 1 7/12 =
B = 1 + 1/2(1+2)+1/3(1+2+3)+...+ 1/12(1+2+3+..+12)