\(x.x^2.x^3.x^4.....x^{49}.x^{50}\)
\(=x^{1+2+3+4+...+50}\)
\(\Rightarrow x^{\left(50+1\right).\left[\left(50-1\right):1+1\right]:2}\)
\(\Rightarrow x^{\left(50+1\right).50:2}\)
\(\Rightarrow x^{1275}\)
\(x.x^2.x^3.x^4.....x^{49}.x^{50}\)
\(=x^{1+2+3+4+...+50}\)
\(\Rightarrow x^{\left(50+1\right).\left[\left(50-1\right):1+1\right]:2}\)
\(\Rightarrow x^{\left(50+1\right).50:2}\)
\(\Rightarrow x^{1275}\)
nho cac ban giup minh nhe
1.tim x thuoc N biet:
a)(2x+1)mu 3=125 b)(x-5)mu 4=(x-5)mu 6 c)2 mu x-15=17 d)(7x-11)mu 3=2 mu 5. 5mu 2+200
2.viet cac tich sau hoac thuong duoi dang luy thua cua mot so:
a)2 mu 5 . 8 mu 4 b)25.125 c)25 mu 5:25 mu 7
3.viet cac tich, thuong sau duoi dang luy thua:
a) 2 mu 10:8 mu 3 b)12 mu 7:6 mu 7 c)5 mu 8:25 mu 2
4.tinh gia tri cac bieu thuc sau:
a mu3 . a mu 9 (a mu 5)mu7 (a mu 6)mu 4. a mu 12 4.5 mu 2-2.3 mu 2
1. viet duoi dang luy thua
a,3.3.3.3.3
b.2.x.2.x.2.x.x
c.a.a+b.b.b+c.c.c.c
d.9500.....0 +198300....0
13 chu so 0 30 chu so 0
viet duoi dang luy thua
64^2.4^12.16^4
1. viet duoi dang luy thua
a,76:72
b.162:42
c,252:52
d,32:93
a . 32 . X + 22.X=26.22_13
b.(2x_1)2=49
c.50-5(x+4 )=15
d. 4.[(30+33):10+97]-300
e.23-53:52:52.22
Đây là đề thi kiểm tra 15 phút của trường mình đấy
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
Bài 1: So sánh : 540 và 450
Bài 2: Tìm x€N:
3x+ 4×3x+1=351
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
Câu 3: Tìm x ∈ N, biết:
a) 3 x . 3 = 243 b) 2 x . 162 = 1024 c) 64.4x = 168 d) 2 x = 16Câu 4 : Tìm x, biết. a) 2 x .4 = 128 b) (2x + 1)3 = 125 c) 2x – 2 6 = 6 d) 49.7x = 2401