a: \(=\left|4-3\sqrt{2}\right|=3\sqrt{2}-4\)

b: \(\sqrt{\left(2+\sqrt{5}\right)^2}=\left|\sqrt{5}+2\right|=\sqrt{5}+2\)

c: \(\sqrt{\left(4+\sqrt{2}\right)^2}=\left|4+\sqrt{2}\right|=4+\sqrt{2}\)

d: \(\sqrt{\left(2-\sqrt{3}\right)^2}=\left|2-\sqrt{3}\right|=2-\sqrt{3}\)

\(\dfrac{70}{5}=\dfrac{70\div5}{5\div5}=14\)

= 70 : 5 , 5: 5

= 14/1

=14

\(\dfrac{70}{5}\)=14(lấy tử chia mẫu)

3/5

\(\dfrac{12}{20}=\dfrac{12:4}{20:4}=\dfrac{3}{5}\)

12/20=3/5

\(\frac{7500-100}{600-35}=\frac{7400}{565}=\frac{1480}{113}\)

\(\frac{7500-100}{600-35}=\frac{7400}{565}=\frac{1480}{113}\)

các bạn tính nhanh phân số đó giúp mình đươc không

14/24 : 2 = 7/12

10/36 : 2 = 5/18

\(\dfrac{5}{27}=\dfrac{5}{27}\)

\(\dfrac{14}{24}=\dfrac{14:2}{24:2}=\dfrac{7}{12}\)

\(\dfrac{10}{36}=\dfrac{10:2}{36:2}=\dfrac{5}{18}\)

5/27 = 0.(185)

14/24 = 7/12

10/36 = 5/18

86/48 = 43/24

43/24

\(\dfrac{86}{48}\)= \(\dfrac{86:2}{48:2}\)=\(\dfrac{43}{24}\)

1. = \(\dfrac{x+y}{x-y}\)
2. = \(\dfrac{x}{x+3}\)

a: ĐKXĐ: \(x>0\)

b: Ta có: \(A=\dfrac{x^2+\sqrt{x}}{x-\sqrt{x}+1}-\dfrac{2x+\sqrt{x}}{\sqrt{x}}+1\)

\(=x+\sqrt{x}-2\sqrt{x}-1+1\)

\(=x-\sqrt{x}\)

98/100 = 49/50                         1212/1313 = 12/13                 

123123/234234 = 123/234        20182018/20152015 = 2018/2015