tinh nhanh
2016 x 34 + 2016 x 63 + 2016 x 2 + 2016
lam nhanh giup minh nha
a 2.(x-11)-40=38
b 2015+{2016.[9-(11-8)^2]+7}
c 3(x-63)-5.18.7
tinh gium minh nha
a.2.(x-11)-40=38 b.2015+{2016.[9-(11-8)^2]+7}
=2.(x-11)=38+40 = 2015+{2016.[9-3^2]+7}
=2.(x-11)=78 =2015+{2016.[9-9]+7}
=x-11=78:2 =2015+{2016.0+7}
=x-11=39 =2015+{0+7}
=x=39+11 =2015+7
=x=50 =2022
Nhớ k cho mik nha ^^
a)2.(x-11)=38+40=78
x-11=78:2=39
x=39+11
x=50
b)2022
c)sai đề rồi bạn ơi
tinh nhanh bieu thuc sau
a) x^6-20x^5-20x^4-20x^4-20x^3-20x^2-20x+1992 voi x= 21
b)x^7-26x^6+27x^5-47x^4-77x^3+50x^2+x+1989 tai x = 25
c)4029-2015x+2015x^2-....+2015x^2014-x^2015 tai x= 2014
d)A= (x-1/x-2015+x-2/x-2014+x-3/x-2013+....+x-2014/x-2+x-2015/x-1):(1/2 +1/3+1/4+....+1/2016) tai x=2016 dau / o day la phan do nha!!
xin nho cac ban giai giup cho minh! cam on nhieu!!!!!!!! minh dang can ket qua gap
tinh nhanh
A= 2015 x 2016 -1
______________________ =........................................................................=..........................
2014x 2016 + 2015
Ta có: 2015x2016-1=(2014+1)x2016-1=2014x2016+2016-1=2014x2016+2015
A=\(\frac{2015x2016-1}{2014x2016+2015}=\frac{2014x2016+2015}{2014x2016+2015}=1\)\(\)
Vậy A=1
Mọi người tk cho mình nha.Mình cảm ơn nhiều ^-^
Tinh A
A=2016/(|x-2013|+2)
Giup minh di minh can gap
Cho (x+y+z)(xy+yz+zx)=xyz
CMR: \(^{x^{2016}+y^{2016}+z^{2016}=\left(x+y+z\right)^{2016}}\)
Bạn nào giải nhanh đúng mình tick cho nha ^^.
Thay x = 0; y = -z = 1, thỏa mãn đề bài nhưng:
02016 + 12016 + (-1)2016 không bằng ( 0 + 1 - 1)2016
=> xem lại đề.
Tính nhanh
2016 x 14 + 2016 x 85 + 2016
2016 x 14 + 2016 x 85 + 2016
= 2016 x 14 + 2016 x 85 + 2016 x 1
= 2016 x (14 + 85 + 1)
= 2016 x 100 = 201600
tinh nhanh: 1^2016+2^2016+3^2016+.......+10^2016/2^2016+4^2016+6^2016+.....+20^2016
\(2^{2016}+4^{2016}+6^{2016}+...+20^{2016}=2^{2016}\left(1+2^{2016}+3^{2016}+...+10^{2016}\right)\)
Do đó:
\(A=\frac{1^{2016}+2^{2016}+3^{2016}+...+10^{2016}}{2^{2016}+4^{2016}+6^{2016}+...+20^{2016}}=\frac{1}{2^{2016}}\)
2 . Tim so nguyen x , biet:
a ) 121 - 2 . ( x + 6 ) = /- 11/ . 2016^0
b ) 2 ./x-1/ - (- 3 ) = 3^2017 : 3 ^ 2016
Ai lam nhanh va dung minh se tick cho nha .
Cac ban oi , hay chuc minh thi tot duoc ko ? hihi (^.^)
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