x+2x+3x+4x+...+2016x=2016.2017
x-2x+3x-4x+...-2016x=2016.2017
Giúp mik nha
tìm x biết x + 2x+ 3x + 4x +....+ 2016x = 2017.2018
VIOLYMPIC TOÁN 7 NHAK
Tìm x biết: x + 2x + 3x + 4x + ..... + 2016x = 2017.2018
ai trả lời nhanh nhất mình tích
=>(1+2+3+......+2016).x=4070306
=>2033136.x=4070306
=>x=4070306:2033136
=>x=\(\frac{1009}{504}\)
Tìm x biết: x + 2x + 3x + ...= 2016x = 2017.2018. giúp với.
tìm x: x+2x+3x+...+2016x=2017.2018
x(1+2+3...2016)=2017.2018
x.2017.2016:2=2017.2018
1008x=2018
x=1009/504
Tìm x , biết x + 2x + 3x +....+ 2016x = 2017.2018
=> (x + x + x + .... + x) . (1 + 2 + 3 + ..... + 2016) = 2017.2018
=> 2016x . 1008 . 2017 = 2017 . 2018
=> 2016x . 1008 = 2018
=> /////////////
Tim x biet : x+2x+3x+...=2016x=2017*2018
Tìm x biết: x+2x+3x+......+2016x=2017.2018
x+2x+3x+......+2016x=2017.2018
\(\Rightarrow\)x.(1+2+3+....+2016)=2017.2018
\(\Rightarrow\)x.2033136=2017.2018
\(\Rightarrow\)x=(2017.2018):2033136
x=\(\dfrac{1009}{504}\)
Chúc bạn học tốt!
2 . ( x³ -1)-2x²(x+2x⁴) +(4x⁵+4)x=6. 3. (X²-4x+16)(x+4)-x(x+1)(x+2)+3x²= 0 4 . ( 8x +2 ) (1-3x) + ( 6x-1)(4x-10) =-50 Đề bài là tìm x nha mn Nhanh giúp mik vs
2:
=>x^3-1-2x^3-4x^6+4x^6+4x=6
=>-x^3+4x-7=0
=>x=-2,59
4: =>8x-24x^2+2-6x+24x^2-60x-4x+10=-50
=>-62x+12=-50
=>x=1
tính
A=x2y-2x2y+3x2y-4x2y+5x2y-6x2y+...2015x2y-2016x2y
A=-x2y-x2y-x2y-...-x2y
=-(x2y+x2y+x2y+...+x2y)
=-1008x2y