Các câu hỏi tương tự
1. a) dfrac{5}{3} . dfrac{11}{7} - dfrac{5}{7} . dfrac{5}{3}b) (0,125)^{16}. (-8)^{16}c) dfrac{9^2.9^3}{3^9}d) dfrac{9}{24} - dfrac{7}{41} + dfrac{15}{24} + 0,75 - dfrac{34}{41}e) 5dfrac{2}{7} . ( -dfrac{1}{3}) - 2dfrac{2}{7} . (-dfrac{1}{3})2. a) dfrac{3}{4} + dfrac{2}{3}x dfrac{1}{2}b) (2x - 1)^2 25c) | x + 5 | - 6 9
Đọc tiếp
1. a) \(\dfrac{5}{3}\) . \(\dfrac{11}{7}\) - \(\dfrac{5}{7}\) . \(\dfrac{5}{3}\)
b) (0,125)\(^{16}\). (-8)\(^{16}\)
c) \(\dfrac{9^2.9^3}{3^9}\)
d) \(\dfrac{9}{24}\) - \(\dfrac{7}{41}\) + \(\dfrac{15}{24}\) + 0,75 - \(\dfrac{34}{41}\)
e) \(5\dfrac{2}{7}\) . ( \(-\dfrac{1}{3}\)) - \(2\dfrac{2}{7}\) . (\(-\dfrac{1}{3}\))
2. a) \(\dfrac{3}{4}\) + \(\dfrac{2}{3}x\) = \(\dfrac{1}{2}\)
b) (2x - 1)\(^2\) = 25
c) | x + 5 | - 6 = 9
Tính hợp lí:
A= -2/9 + -3/4 + 3/5 + 1/15 + 1/57 + 1/3 + -1/36
B= 1/2 + (-1/5 )+ (-5/7) + 1/6 + (-3/35) + 1/3 + 1/41
Bài 2 tính giá trị biểu thức sau
A=1/4:15/7*(-30)
B=(-5/9)*3/11+(-17/9)*3/11
C=1/2-3/4+5/6-7/12
D=-5/14+4/37+19/14-41/37
E=(5/3-3/7+9)-(2+5/7-2/3)+(8/7-4/3-10)
F=-3-2/3+3/5(-10/9-25/3)-5/6
G=2 mũ 6 * 9 mũ 2 / 6 mũ 4 * 8
H=2 mũ 15 * 9 mũ 4 / 6 mũ 3 * 8 mũ 3
/ là phần nhé
Các bạn giải giúp mik vs sắp đi hk òi
\(\dfrac{9}{24}-\dfrac{7}{41}+\dfrac{15}{24}+0,75-\dfrac{34}{41}\)
Tính hợp lý
a)-41/-32.(15/8-16/41)+15/8.(41/32-8/3)
b)43/47.(18/37+47/43)-(43/47+37/36)
c)5/7.(1/2-1/3+4/7)+(1/3-1/2-4/7):7/5
Bài 1:
\(a,\frac{-5}{14}-\frac{37}{14}\le x
Tính
a)7/4.(4/3-8/5)+|-5/6|:(4/3-5/12)
b)5/7:(9/14-1/7)-3/8.(1/9-5/6)
c)2vaf2/5.(-15/26)+-13/15:|-26/25|
Vaf là và nhé
Tính nhanh :
\(C=\frac{1}{3}+\frac{-3}{4}+\frac{3}{5}+\frac{1}{57}+\frac{-1}{36}+\frac{1}{15}+\frac{-2}{9}\)
\(D=\frac{1}{2}+\frac{-1}{5}+\frac{-5}{7}+\frac{1}{6}+\frac{-3}{35}+\frac{1}{3}+\frac{1}{41}\)
\(E=\frac{-1}{2}+\frac{3}{5}+\frac{-1}{9}+\frac{1}{127}+\frac{-7}{18}+\frac{4}{35}+\frac{2}{7}\)
Ta có √25 = 5 ; -√25 = -5 ; √(-5)2 = √25 = 5
Theo mẫu trên hãy tính
