1) \(\left(5+x\right)^2-36=0\)
\(\Rightarrow\left(5+x-6\right)\left(5+x+6\right)=0\Rightarrow\left(x-1\right)\left(x+11\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=1\\x=-11\end{matrix}\right.\)
2) \(\Rightarrow\left(7x-11\right)^3=1000=10^3\)
\(\Rightarrow7x-11=10\Rightarrow7x=21\Rightarrow x=3\)
Tìm x biết : ( 7x - 11 )^3 = 2^5 . 5^2 + 200
(7x - 11) mũ 3 = 2 mũ 5 x 5 mũ 5 + 200
Tìm x
a) 315 + (146 -x ) =401
b) (6x - 39 ) : 3 =201
c) 7x - x = 5 mũ 21 :5 mũ 19 + 3.2 mũ 2 - 70
d) 7x - 2x = 617 : 615 +44 :11
e) 0 :x = 0
f) 3 mũ x = 9
g) 9 mũ x -1 = 9
h) (2x +1 ) mux3 = 125
i) 2 mũ x - 15 =17
k) (7x - 11 )mũ 3 = 25 . 5 mũ 2 +200
l) 3 mũ x + 25 = 26. 2 mũ 2 + 2 . 3 mũ 0
m) 5 .2 mũ x + 4 .2 mũ x = 18 . 2 mũ 5
a. 2^x - 15 = 17
b. 27 . 3^x = 243
c. 3^x + 25 = 26 . 2^2 + 2 . 3^0
d. ( 7x - 11 )^3 = 2^5 . 5^2 + 200;
e. 3^x . 3 = 27
(7x - 11)3 = 25 . 52 + 200
3x + 25 = 26.22+2.30
a 2^x-15=17
b (7x-11)^3=2^5*5^2+200
3 ngũ x - 2 = 81
( 7x -11)ngũ 3 = 2 ngũ 5* 5 ngũ 2 +200
tìm x,biết
2 mũ x-15=17
(7x-11) mũ 3=25 nhân 5 mũ 2+200
(x +1) mũ 100-3 nhân (x+1) mũ 99=0
4x+5 nhân (x+3)=105
5 nhân(x-2)+10 (x+3)=170
Tim x biet
(7x -11 )^3 = 2^5 x 2^2 +200
