\(\left(x-1\right)5=5^3\)
Giúp mik với!
Tìm x, biết:
b)3/x+4/-/2x+1/-5/x+3/+/x-9/=5
c)\(\left|\frac{11}{5}-x\right|+\left|x-\frac{1}{5}\right|+\frac{41}{5}=1,2\)
d)\(2\left|x+\frac{7}{2}\right|+\left|x\right|-\frac{7}{2}=\left|\frac{11}{5}-x\right|\)
CÁC BẠN GIÚP GIÚP MIK GIẢI BÀI NÀY VỚI, MI ĐANG GẤP LẮM!!!
MIK SẼ TICK CHO...PLEASE!!!
tính nhanh
\(\left(1-\dfrac{1}{2}\right)x\left(1-\dfrac{1}{3}\right)x\left(1-\dfrac{1}{4}\right)x\left(1-\dfrac{1}{5}\right)=\)
làm ơn giúp mik với ạ ^^
\(\dfrac{1}{2}\times\dfrac{2}{3}\times\dfrac{3}{4}\times\dfrac{4}{5}=\dfrac{1}{5}\)
\(\left(1-\dfrac{1}{2}\right)\times\left(1-\dfrac{1}{3}\right)\times\left(1-\dfrac{1}{4}\right)\times\left(1-\dfrac{1}{5}\right)\)
\(=\left(\dfrac{2}{2}-\dfrac{1}{2}\right)\times\left(\dfrac{3}{3}-\dfrac{1}{3}\right)\times\left(\dfrac{4}{4}-\dfrac{1}{4}\right)\times\left(\dfrac{5}{5}-\dfrac{1}{5}\right)\)
\(=\dfrac{1}{2}\times\dfrac{2}{3}\times\dfrac{3}{4}\times\dfrac{4}{5}\)
\(=\dfrac{1\times2\times3\times4}{2\times3\times4\times5}\)
\(=\dfrac{1}{5}\)
Nhờ mn giúp mik với ạ
Tìm GTNN
A= \(\left(x-3y\right)^2+\left(2x-1\right)^4\)
B= \(\left|x-2\right|+\left|3x-2y\right|-4\)
C= \(\dfrac{-4}{\left|x+1\right|\left|y-3\right|+2}\)
D=\(\left|x-5\right|+\left|x-1\right|+7\)
Tìm x, biết:
b)3/x+4/-/2x+1/-5/x+3/+/x-9/=5
c)\(\left|\frac{11}{5}-x\right|+\left|x-\frac{1}{5}\right|+\frac{41}{5}=1,2\)
d)\(2\left|x+\frac{7}{2}\right|+\left|x\right|-\frac{7}{2}=\left|\frac{11}{5}-x\right|\)
CÁC BẠN GIÚP MIK VỚI!!!
bài 1
a, \(\left(x+\frac{5}{3}\right).\left(x-\frac{5}{4}\right)=0\)
giúp mik với !!!
\(a,\left(x+\frac{5}{3}\right).\left(x-\frac{5}{4}\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x+\frac{5}{3}=0\\x-\frac{5}{4}=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=\frac{-5}{3}\\x=\frac{5}{4}\end{cases}}\)
Vậy \(x=\frac{-5}{3}\)hoặc \(x=\frac{5}{4}\).
Học tốt
\(\left(x+\frac{5}{3}\right)\left(x-\frac{5}{4}\right)=0\)
<=> x + 5/3 = 0 hoặc x - 5/4 = 0
<=> x = - 5/3 hoặc x = 5/4
\(\left(x+\frac{5}{3}\right)\left(x-\frac{5}{4}\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x+\frac{5}{3}=0\\x-\frac{5}{4}=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=0-\frac{5}{3}\\x=0+\frac{5}{4}\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=\frac{-5}{3}\\x=\frac{5}{4}\end{cases}}\)
a, \(x-\left[\frac{17}{2}-\left(\frac{-3}{7}+\frac{5}{3}\right)\right]=\frac{-1}{3}\)
b,\(\frac{9}{2}-\left[\frac{2}{3}-\left(x-\frac{7}{4}\right)\right]=\frac{-5}{4}\)
giúp mik với nhé !!! bài khó mik ko làm đc
x-[17/2-6/35]=-1/3
x-583/70=-1/3
x=-1/3+583/70
x=1679/210
vậy x=1769/210
[2/3-(x-7/4)]=9/2+5/4
[2/3-(x-7/4)]=23/4
(x-7/4)=23/4+2/3
(x-7/4)=77/12
x=77/12+7/4
x=49/6
vậy x=49/6
Tìm x biết
\(5^{\left(x-2\right)\left(\left(x+3\right)\right)}=1\)
giúp mik vs mik cần gấp
Đề bằng 1 thì (x-2)(x+3)=0 suy ra x=2 hoặc x=-3.
\(5^{\left(x-2\right)\left(x+3\right)}=1\)
đặt tổng của (x-2)(x+3) là a
\(\Leftrightarrow5^a=1\)
\(\Leftrightarrow x=0\)
thay vào \(\left(x-2\right)\left(x+3\right)=0\)
\(\Leftrightarrow\orbr{\begin{cases}x-2=0\\x+3=0\end{cases}\Leftrightarrow\orbr{\begin{cases}x=2\\x=-3\end{cases}}}\)
vậy x=2 hoặc x=-3
1)\(\dfrac{7}{12}-\left(x+\dfrac{7}{10}\right):\dfrac{6}{5}=\dfrac{-5}{4}\)
2)\(\left(5+\dfrac{4}{7}\right):x=13\)
giúp mik giải câu này với
1) Tìm x, biết :
a) \(\left|x-\frac{1}{3}\right|=\left|2x-3\right|\)
b) \(\left(3\frac{5}{7}.x-1\frac{5}{7}.x\right)-\frac{1}{3}=\frac{2}{3}\)
Giúp mik với !!!!!!!
Thanks !
#Hạ
\(\text{a) }\left|x-\frac{1}{3}\right|=\left|2x-3\right|\)
\(\Rightarrow\orbr{\begin{cases}x-\frac{1}{3}=2x-3\\x-\frac{1}{3}=3-2x\end{cases}\Rightarrow\orbr{\begin{cases}x-2x=-3+\frac{1}{3}\\x+2x=3+\frac{1}{3}\end{cases}\Rightarrow}\orbr{\begin{cases}-x=-\frac{8}{3}\\3x=\frac{10}{3}\end{cases}\Rightarrow}\orbr{\begin{cases}x=\frac{8}{3}\\x=\frac{10}{9}\end{cases}}}\)
\(\text{Vậy }S=\left\{\frac{8}{3};\frac{10}{9}\right\}\)
\(\text{b) }\left(3\frac{5}{7}.x-1\frac{5}{7}.x\right)-\frac{1}{3}=\frac{2}{3}\)
\(\Leftrightarrow\left(\frac{26}{7}.x-\frac{12}{7}.x\right)=\frac{2}{3}+\frac{1}{3}\)
\(\Leftrightarrow x.\left(\frac{26}{7}-\frac{12}{7}\right)=1\)
\(\Leftrightarrow x.2=1\)
\(\Leftrightarrow x=\frac{1}{2}\)
\(\text{Vậy }S=\left\{\frac{1}{2}\right\}\)