Các câu hỏi tương tự
2\(^7\) + ( x - 3\(^7\) ) = 5\(^7\) - 4\(^7\)
3 \(^x\) - (x + 2 \(^x\)) = 7
7 \(^2\) - (15 + x) = 5.2 \(^2\)
7 \(^3\) - 7(13 - x) = 14
3/5.2^x +7/2 .2^x+3 =3/5 .2^10 +7/5 .2^13
Tìm x thuộc N:
a) 4^x+a^x+3 = 4160
b) 2^x-1+5.2^x-2 = 7/32
Tìm x thuộc Z, biết:
1) \(3.5^{x+5}+4.5^{x-3}=19.5^{10}\)
2) \(6.8^{x-1}+8^{x+1}=6.8^{19}=8^{21}\)
3) \(5.2^x+3.2^{x+2}=5.2^5+3.2^7\)
1.
A= 2.8^4.27^2+4.9^9/2^7.6^7+2^7.40.9^4
B= (2/3)^3 . (-3/4)^2.(-1)^5/(22/5)^2.(-5/12)^3
2. Tìm số tự nhiên x, biết:
a, 4^x+4^x+3= 4160
b, 2^x-1+5.2^x-2=7/32
Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!Please!!!
1)tim x biet rang:
a)3^x-1=1/243
b)2^x+2^x+3=144
c)81^-2x.27x=9^5
2)tim tiep so ghang thu 5 cua day so sau:-1/a^2;2/a^3;-6/a^4;24/a^5;...
3)tim so tu nhien x biet :
a)4^x+4^x+3=4160
b)2^x-1+5.2^x-2=7/32
\(4^x+4^{x+3}=2160\)
\(2^{x-1}+5.2^{x-2}=\frac{7}{32}\)
\(\left(8-3x\right)^5=\left(8-3x\right)^3\)
\(\left(2x-3\right)^4=\left(2x-3\right)^6\)
2 mũ x + 2 mũ x+3= 144
2 mũ x-1 + 5.2 mũ x-2= 224
(1/5-2/7).3/4-3/4.(1/3-2/7)/1/5.2/7-1/3.(2/7+3/9)+3/9.1/5