\(10-\left\{\left[\left(x:3+17\right):10+3.2^4\right]:10\right\}=5\)
\(\Leftrightarrow\left[\left(x:3+17\right):10+3.2^4\right]:10=5\)
\(\Leftrightarrow\left(x:3+17\right):10+3.16=50\)
\(\Leftrightarrow\left(x:3+17\right):10+48=50\)
\(\Leftrightarrow\left(x:3+17\right):10=2\)
\(\Leftrightarrow x:3+17=20\Leftrightarrow x:3=3\)
\(\Leftrightarrow x=9\)
mk làm gọn bn làm chi tiết hơn nha
1) a) (-17)+5+8+17+(-3) b)25*2^2-(15-18)+(12-19+10
2) a) x+5=20-(12-7) b) 35-3gia tri tuyet doi cua x =5*(2^3-4)
10-{[(x:3+17):10+3.16]:10}=5
+Tim x :
a ) \(\left(x-\frac{1}{2}\right)^3=\frac{1}{27}\)
b )\(\left(x+\frac{1}{2}\right)^2=\frac{4}{25}\)
c ) \(\left(x+1\right)^{x+2}=\left(x-1\right)^{x+6}\) (x ϵ Z )
d ) \(\left(2x+3\right)^{2016}=\left(2x+3\right)^{2018}\)
e ) \(\frac{3}{x+2.x+5}+\frac{5}{x+5.x+10}+\frac{7}{x+10.x+17}=\frac{x}{x+2.x+17}\) Với \(x\notin\left\{-2;-5;-10;-17\right\}\)
1,(x-20).(2y+1)=17
2,(x-10.(y+20)=7
3,x.y-3=12
4,x.y+x+2y=5
5,x.y+2x+2y=16
Viết kết quả phép tính dưới 1 dạng lũy thừa:
a. 2^3 . 2^2 . 2^4
b. 10^2 . 10^3 . 10^5
c. x. x^5
d. a^3 . a^2 . a^5
Bài 1: Tìm x, biết:
a. { [ ( 2 : x + 14 ) : 22 - 3 ] : 2 } - 1 = 0
b. 10 - { [ ( x : 3 + 17 ) : 10 + 3 . 16 ] : 10 } = 5
Bài 2: So sánh:
a. 1619 với 825
b. 2711 với 818
Tìm x :
\(\frac{3}{\left(x+2\right).\left(x+5\right)}+\frac{5}{\left(x+5\right).\left(x+10\right)}+\frac{7}{\left(x+10\right).\left(x+17\right)}=\frac{x}{\left(xx+2\right).\left(x+17\right)}\)
Giúp mk với 
Tìm x biết:
\(\dfrac{-2}{3}.x+\dfrac{1}{5}=\dfrac{3}{10}\)
b) (50%.x+2\(\dfrac{1}{4}\)).\(\dfrac{-2}{3}\)=\(\dfrac{17}{6}\)
Tính:
S1:(1/2-1)x(1/3-1)x(1/4-1)x..............x(1/100-1)
S2:3/22x8/32x10/42x...............x899/302
S3:55+56+...............+5100
S4:7/10x11+7/11x12+.................+7/69x70
S5:15/90x95+15/94x98+.....................+15/146x150
S6:10/56+10/140+10/28+...................+10/1400
gs mk nhé !
