\(=x^3\left(x^2-1\right)=x^3\left(x-1\right)\left(x+1\right)\)
x5 - x3 = (x2,5)2 - (x1,5)2 = (x2,5 - x1,5)(x2,5 + x1,5)
\(x^5-x^3=x^3\left(x-1\right)\left(x+1\right)\)
\(=x^3\left(x^2-1\right)=x^3\left(x-1\right)\left(x+1\right)\)
x5 - x3 = (x2,5)2 - (x1,5)2 = (x2,5 - x1,5)(x2,5 + x1,5)
\(x^5-x^3=x^3\left(x-1\right)\left(x+1\right)\)
A,(X-2)^11 = (x-2)^3 ; b, (x-5)^24 = (x-5)^9 ; c, (x-5)^25 = (x-5)^4
Tìm x
100-7.(x-5)=31+33
12.(x-1):3=43+23
24+5.x=75:73
5.x-206=24 . 4
\(\left(3-x\right)^6=\left(3-x\right)^4\) \(\left(3^2\right)^2+2^x=5\left(5+2^2.3\right)\) \(5^{x-1}+5^x=150\)
Bài 2: Tìm x
a) 5 ( x + 7 ) - 10 = 23 . 5
b) 26 + ( 5 + x ) 34
c) 42 . 2 . ( x + 2 ) = 4
d) 4x – 2 . 42 = 64
e) x + 2 . x + 3 . x + ….. + 100 . x = 10100
f ) ( x + 17 ) : 21 – 3 = 7
1) (3^2-2).(x-12)+35=5^2+279.3^2
2) (2^2-1).(x-1)=2^2+(6^2+2^6):(5^2.2)
3) (2^2+1).(x+14)=5^2.4+(2^5+3^2+7^2)
4) 2^2.3.(x+5)-6^2=(2^3+2^2).2^2
5) 3^2.(x+1)-3=2^3+(7^2.2).14
6) (2^2+3).(x-5)+14=5^2+124:2^2
7) 260:(x+4)=5.(2^3+5)-3.(3^2+2^3)
8) 75:(x+2)=53-(3^2+4^2).2^2
Mong mọi người giúp mình với
2^x+1 : 4=32
3^x-2:3=243
256:4^x+1=4^2
4^2x-1:4=4^4
5^x-1:5=5^3
3^2x+1:3=3^4
Tìm x biết:
5x+1+5x+2+5x+3=155
A.3^x=243 B.4^x=4096 C. 5^3-x=25 D.8^2x-3=512 E.2214-5.7^2x-3=499 J. 2^x+3+2^x+1=80
(x=10)
2 mũ 4 * 5 -2*(x-5)-3 mũ x=2 mũ 2 + 5 mũ 2
bài 2 viết mỗi tích, thương sau dưới dạng luỹ thừa
a) 4^10 x 2^30 b) 9^25 x 27^4 x 81^3 c) 25^50 x 125^5 d) 64^3 x 4^8 x 16^4
e)3^8:3^6 ; 2^10:8^3 ; 12^7 :6^7 ; 31^5 ; 81^3
f) 5^8 : 25^2 ; 4^9:64^2 ; 2^25 : 32^4 ; 125^3 : 25^4