\(x^{2018}+2x^{2017}+3x^{2016}+...+2017x+2018\)
voi x=1 tinh bieu thuc tren
Những câu hỏi liên quan
tinh x^10+2017x^9-2017x^8-2017x^7+...........+2017x^2-2017x+2017 voi x=2016
tinh x^10+2017x^9-2017x^8-2017x^7+...........+2017x^2-2017x+2017 voi x=2016
So sánh : 2016 x 2018 với 2017x 2017
\(4068288;4068289\)
VẬY \(2016\)NHÂN \(2018>\)\(2017\)NHÂN \(2017\)
Đúng 0
Bình luận (0)
Xem thêm câu trả lời
tìm x . 0.05*((2x-2)/2016 +2x/2017+(2x+2)/2018)=3.3-((x-1)/2016+x/2017+(x+1)/2018)
tim GTNN cua bieu thuc A=x-2017|x - 2017| + |x - 2018| + |x - 2019|
|3x-2018| + |x-2017| = |2x -1|
|x-1| + |x-3| +|x-5| +|x-7| = 8
|x-2018| + |x-2017| + |x-2018| = 2
MOi nguoi giup minh voi 4gio minh can roi
\(\left|3x-2018\right|+\left|x-2017\right|=\left|2x-1\right|\)
\(\Rightarrow\orbr{\begin{cases}3x-2018+x-2017=2x-1\\-\left(3x-2018\right)+\left[-\left(x-2017\right)\right]=2x-1\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}4x-4035=2x-1\\\left(-3x-x\right)+\left(2018+2017\right)=2x-1\end{cases}}\)
Làm tiếp
TH2:
\(\left|3x-2018\right|+\left|x-2017\right|=\left|2x-1\right|\)
\(\Rightarrow\orbr{\begin{cases}3x-2018+x-2017=-2x+1\\-\left(3x-2018\right)+\left[-\left(x-2017\right)\right]=-2x+1\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}4x-4035=-2x+1\\\left(-3x-x\right)+\left(2018+2017\right)=-2x+1\end{cases}}\)
Tự tiếp tiếp nha bạn
Bài sau cũng tg tự vậy mà làm
Đúng 0
Bình luận (0)
tinh gia tri bieu tuc
P= 2018. x2016 . y2017 - (z -1 )2018 , biet ( x+ 1)6 + (y-1)4 = -z2
\(\left(x+1\right)^6+\left(y-1\right)^4=-z^2\)
\(\Rightarrow\left(x+1\right)^6+\left(y-1\right)^4+z^2=0\)
Ta có: \(\hept{\begin{cases}\left(x+1\right)^6\ge0\\\left(y-1\right)^4\ge0\\z^2\ge0\end{cases}}\Rightarrow\left(x+1\right)^6+\left(y-1\right)^4+z^2\ge0\)
Mà \(\left(x+1\right)^6+\left(y-1\right)^4+z^2=0\)
\(\Rightarrow\hept{\begin{cases}\left(x+1\right)^6=0\\\left(y-1\right)^4=0\\z^2=0\end{cases}}\Rightarrow\hept{\begin{cases}x=-1\\y=1\\z=0\end{cases}}\)
Thay x = -1, y = 1, z = 0 vào P
\(\Rightarrow P=2018.\left(-1\right)^{2016}.1^{2017}-\left(0-1\right)^{2018}\)
\(=2018-1=2017\)
Vậy...
Đúng 0
Bình luận (0)
giup mk gap 5 tick nha giai chi tiet nhe tinh gia tri cua da thuc P(x)= x^2018 + x^2017 + x^2016 + .... + x^2 + x + 1 tai x=1
Cac ban giup minh voi minh can nop gap
Tim gia tri nho nhat cua bieu thuc:
P= / x-1/+/x-2017/+/x-2018/
* Dau gach cheo la dau gia tri tuyet doi nhe