giup minh nha
-5:(1-x)=7:(-3)
THANK
(x-3) chia het cho (x+1) ; (2x+5) chia het cho (x+1); (4x+1)chia het cho (2x+2)
CAC BAN GIUP MINH VOI NHA . MUM THANK CAC BAN TRC
Tim x
A, 6 x + x = 5^11 : 5^9 +3^1
B, 7 x - x = 5^21 : 5^19 + 3 . 2^2 -7^0
C, 7 x - 2x = 6^17 : 6^15 + 44 : 11
giup minh nhe . Thank you
Bai 1:
a, cho x+y=7 . Tinh M= (x+y)3+2x2+4xy+2y2
b, cho x-y=7 . Tinh A = x.(x+2)+y.(y-2)-2xy+37
GIUP MINH NHA, THANK YOU!^^
a: \(M=\left(x+y\right)^3+2\left(x^2+2xy+y^2\right)\)
\(=\left(x+y\right)^3+2\left(x+y\right)^2\)
\(=7^3+2\cdot49=441\)
b: \(A=x^2+2x+y^2-2y-2xy+37\)
\(=\left(x-y\right)^2+2\left(x-y\right)+37\)
\(=7^2+2\cdot7+37\)
\(=49+14+37=100\)
|x-5| - 7|x+4| = 5 - 7x
giup minh giai voi, thank nhieu
Tim x thuoc N sao cho \(\frac{2xx+5}{xx+1}\)(2x+5\x+1) la so tu nhien
CAC BAN GIUP MINH NHA thank you so much
\(\frac{2x+5}{x+1}\in N\\ \Leftrightarrow2x+5⋮x+1\\ \Rightarrow2\left(x+1\right)+3⋮x+1\\ \Rightarrow3⋮x+1\)
giai phuong trinh:
(5x+5)/(x2-4x+6)+(6x+6)/(x2-5x+7)=17/2
giup mik nha moi nguoi,minh can gap bay gio! thank you! ^_^
(x+1)+(x+3)+(x+5)+(x+7)=32
Giup minh nha minh dang can gap
Ta có : \(\left(x+1\right)+\left(x+3\right)+\left(x+5\right)+\left(x+7\right)=32\)
\(\Leftrightarrow x+x+x+x+1+3+5+7=32\)
\(\Leftrightarrow4x+16=32\Leftrightarrow4x=16\Leftrightarrow x=4.\)
\(\left(x+1\right)+\left(x+3\right)+\left(x+5\right)+\left(x+7\right)=32\)
\(\left(x+x+x+x\right)+\left(1+3+5+7\right)=32\)
\(4x+16=32\)
\(4x=16\)
\(\Leftrightarrow x=4\)
(x+1)+(x+3)+(x+5)+(x+7)=32
=> x+1+x+3+x+5+x+7 =32
=> 4x + 16 = 32
=> 4x = 32-16
=> 4x = 16
=> x = 4
Vậy x=4
tim gia tri nho nhat va lon nhat cua A=x+y+1 biet x^2 +2xy +7(x+y)+2y^2+10
ai giup minh vs mai nop roi Thank thank ^-^<3
/x-2017/+/x-2018/=1
Cac ban giup minh giai bai nay nha thank you