|2x- 1 phần 3| +2 phần 5 = 0.75
HELP ME NOW PLEASE !!!!!!!
1 + 3 + 5 + 7 + ... + \(x\)= 240
HELP ME, I NEED RIGHT NOW
1*2*3+2*3*4+3*4*5+4*5*6+5*6*7+6*7*8+7*8*9+8*9*10
^_^ ^_^ Help me! Mình sẽ cho đúng nếu có trình bày
a, ( 2x-1)3=3
b, (4x-6)3-2*103=25*52
HELP ME !!!!!
Tìm y
a) ( 1/2*4 + 1/4*6 + 1/6*8 + 1/8*10) * y =1/3
b) ( 1/1*3 + 1/3*5 + 1/5*7 + 1/7*9 + 1/9*11) * y =2/3
Help me please!!!!!!!!!!!!!
Tìm x thuộc N biết : 1 mũ 3+ 2 mũ 3 + 3 mũ 3+...+ 10 mũ 3=(x+1) mũ 2
Help me!!!!
[1/2+1/3+1/4+.....+1/10] .x=1/9=2/8+3/7+.....+9/1
help me
1) Thuc hien phep tinh:
a) 4^6 × 9^2 / 6^3 × 8^2
b) 5^6 × 15^4 /5^4 × 3^3
c) 3^9 - 2^3 × 3^7 + 2^10 × 3^2 - 2^13 / 3^10 - 2^2 × 3^7 + 2^10 × 3^3 - 2^12
d) (1/9)^10 : (1/3)^20
e) (1/64)^5 × (1/4)^7
2) Chung minh rang:
a)2014^100+2014^99 chia het cho 2015
b) 4^13+32^5-8^8 chia het cho 5
c) 81^27-27^9-9^13 chia het cho 405
Help me!! Pleass!!
help me!!!!!!!
1/2.x+3/5.(x-2)=3
