Các câu hỏi tương tự
Tim x :
\(a.\left\{\frac{1}{2}-\frac{1}{3}\right\}.6^x+6^{x+2}=6^{10}+6^7\)
\(b.\left\{\frac{1}{2}-\frac{1}{6}\right\}.3^{x+4}-4.3^x=3^{16}-4.3^{13}\)
ai nhanh mk tk !
tìm x ; y
\(\frac{x}{7}\)= \(\frac{y}{3}\) và x - y =20
3\(^{x-3}\). 9 = 729
\(\frac{5}{6}\)+ 3 .| x - \(\frac{1}{2}\)| = \(\frac{7}{3}\)
Tìm số nguyên x, nếu biết
\(5^{x+4}-3.5^{x+3}=2.5^{11}\)
\(4^{x+3}-3.4^{x+1}=13.4^{11}\)
\(\left(\frac{1}{3}+\frac{1}{6}\right)2^{x+4}-2^x=2^{13}-2^{10}\)
\(\left(\frac{1}{2}-\frac{1}{6}\right)3^{x+4}-4.3^x=3^{16}-4.3^{13}\)
TÌM X:
\(\left(3^x\right)^2:3^2=\frac{1}{729}\)
tìm x biết
(3x-2)\(^5\) =-243
\(\frac{1}{9}.27^x=3^x\)
\(\frac{1}{3^2}.3^4.3^n=3^7\)
Tìm số nguyên x, nếu biết:
1)\(4.3^{x-1}+2.3^{x+2}=4.3^6+2.3^9\)
2)\(\frac{5}{3}.8^{x+2}-\frac{3}{5}.8^x=\frac{5}{3}.8^{11}-\frac{3}{5}.8^9\)
3)\(\left(\frac{1}{3}+\frac{1}{6}\right).2^{x+4}-2^x=2^{13}-2^{10}\)
Mấy bn giúp mk nha!!! lm câu nào cg đc hết á, cảm ơn nha!!!!!
:D
tìm x
a , \(2.3^{x+2}+4.3^{x+1}=3^6.10\)
b, \(\left(\frac{1}{3}+\frac{1}{6}\right).2^{x+4}-2^x=2^{13}-2^{16}\)
tìm x . biết
a)(2x+3)2=\(\frac{9}{144} \)
b) (3x-1)3=\(\frac{-8}{27}\)
c) (x4)2= \(\frac{x^{12}}{x^5}\)
d) x10=25x8
e) \(\frac{x^7}{81}\)= 27
f) \(\frac{x^8}{9}\)= 729
Xem chi tiết
a)(2x+3)2=\(\frac{9}{144} \)
b) (3x-1)3=\(\frac{-8}{27}\)
c) (x4)2= \(\frac{x^{12}}{x^5}\)
d) x10=25x8
e) \(\frac{x^7}{81}\)= 27
f) \(\frac{x^8}{9}\)= 729
tìm x biết : a,\(\frac{x^7}{81}=27\); b,\(\frac{x^8}{9}=729\); c.\(^{\left[x-\frac{1}{2}\right]^0}\); d,\(\left[X-2\right]^2=1\); e, \(\left[2X-1\right]^3=8\); f,\(\left[X+\frac{1}{2}\right]^2\)=\(\frac{1}{16}\)