Các câu hỏi tương tự
Đơn giản hoá \(\left(\dfrac{1}{2}\right)^{\dfrac{-1}{4}}\)
A) -16 B) -\(\sqrt{2}\) C) -\(\dfrac{1}{16}\) D) -\(\dfrac{1}{256}\) E) \(\sqrt{2}\)
Đơn giản hóa\(\left(\dfrac{1-\dfrac{1}{a^2}}{\dfrac{1}{a}+1}\right)\left(\dfrac{a^2}{1-a}\right)\)
A. a+1 B.-a C.a D.-a-1 E.\(\dfrac{a-1}{a}\)
Đơn giản hóa \(\dfrac{15^{30}}{45^{15}}\)
A.\(\left(\dfrac{1}{3}\right)^{15}\) B.\(\left(\dfrac{1}{3}\right)^2\) C.1 D.315 E.515
12 tháng 3 2022 lúc 14:30
Tìm x biết:a,dfrac{4}{5}+xdfrac{2}{3}b,dfrac{-5}{6}-xdfrac{2}{3}c,dfrac{1}{2}x+dfrac{3}{4}dfrac{-3}{10}d,dfrac{x}{3}-dfrac{1}{2}dfrac{1}{5}e,dfrac{x+3}{15}dfrac{1}{3}h,x+30%x-1,3k,3dfrac{1}{3}x+16dfrac{1}{4}13,25m,dfrac{x-6}{2}dfrac{50}{x-6}n,x-13,424,5-6,7.5,2p,15,7x+3,6x-96,5q,2,5x-11,6-59,1
Đọc tiếp
Tìm x biết:
\(a,\dfrac{4}{5}+x=\dfrac{2}{3}\)
\(b,\dfrac{-5}{6}-x=\dfrac{2}{3}\)
\(c,\dfrac{1}{2}x+\dfrac{3}{4}=\dfrac{-3}{10}\)
\(d,\dfrac{x}{3}-\dfrac{1}{2}=\dfrac{1}{5}\)
\(e,\dfrac{x+3}{15}=\dfrac{1}{3}\)
\(h,x+30\%x=-1,3\)
\(k,3\dfrac{1}{3}x+16\dfrac{1}{4}=13,25\)
\(m,\dfrac{x-6}{2}=\dfrac{50}{x-6}\)
\(n,x-13,4=24,5-6,7.5,2\)
\(p,15,7x+3,6x=-96,5\)
\(q,2,5x-11,6=-59,1\)
1, A= \(\dfrac{-3}{4}.\left(0,125-1\dfrac{1}{2}\right):\dfrac{33}{16}-25\%\)
2, B= \(1\dfrac{13}{15}.0,75-\left(\dfrac{11}{20}+25\%\right):\dfrac{7}{3}\)
3, C= \(\dfrac{5}{16}:0,125-\left(2\dfrac{1}{4}-0,6\right).\dfrac{10}{11}\)
4, D= \(6\dfrac{5}{12}:2\dfrac{5}{4}+11\dfrac{1}{4}.\left(\dfrac{1}{3}-\dfrac{1}{5}\right)\)
28 tháng 2 2022 lúc 15:04
Tìm x biết:
\(a,\left(x-\dfrac{3}{4}\right)+50\%=\dfrac{1}{6}\)
\(b,\dfrac{1}{2}x-\dfrac{5}{6}x=\dfrac{7}{2}\)
\(c,\left(4-x\right)\left(3x+5\right)=0\)
\(d,\dfrac{x}{16}=\dfrac{50}{32}\)
\(e,\left(2x-3\right)+\dfrac{3}{2}=-\dfrac{1}{4}\)
Điền dấu thích hợp (>,<,=) vào chỗ trống.
a,\(\dfrac{-6}{11}+\dfrac{5}{-11}....--1\) b.\(\dfrac{-5}{16}+\dfrac{-3}{16}...\dfrac{-1}{3}\)
c,\(\dfrac{2}{5}...\dfrac{3}{4}+\dfrac{-1}{6}\) d,\(\dfrac{5}{6}+\dfrac{-2}{3}...\dfrac{1}{12}+\dfrac{-4}{5}\)
Giúp mk nha :>>. Mk cảm ơn.
\(a,\dfrac{3}{5}+\dfrac{-5}{9}\)
\(b,\dfrac{1}{3}+\dfrac{-4}{3};\dfrac{4}{7}\)
\(c,-\dfrac{27}{23}+\dfrac{5}{21}+\dfrac{4}{23}+\dfrac{16}{21}+\dfrac{1}{2}\)
\(d,\dfrac{-8}{9}+\dfrac{1}{9}.\dfrac{2}{9}+\dfrac{1}{9}.\dfrac{7}{9}\)
a) dfrac{12}{16} dfrac{-x}{4} dfrac{21}{y} dfrac{z}{80} b) dfrac{1}{3} x + dfrac{2}{5} ( x - 1 ) 0c) ( 2x - 3 )( 6 - 2x ) 0d) dfrac{-2}{3} - dfrac{1}{3} ( 2x - 5 ) dfrac{3}{2}e) 2 |dfrac{1}{2} x - dfrac{1}{3} | - dfrac{1}{4}
Đọc tiếp
a) \(\dfrac{12}{16}\) = \(\dfrac{-x}{4}\) = \(\dfrac{21}{y}\) = \(\dfrac{z}{80}\)
b) \(\dfrac{1}{3}\) x + \(\dfrac{2}{5}\) ( x - 1 ) = 0
c) ( 2x - 3 )( 6 - 2x ) = 0
d) \(\dfrac{-2}{3}\) - \(\dfrac{1}{3}\) ( 2x - 5 ) = \(\dfrac{3}{2}\)
e) 2 |\(\dfrac{1}{2}\) x - \(\dfrac{1}{3}\) | - \(\dfrac{1}{4}\)