Vì \(x+31⋮x\Rightarrow5.\left(31+x\right)⋮x\Rightarrow155+5x⋮x\)
\(\Rightarrow150+\left(5x+5\right)⋮x\)\(\Rightarrow150⋮x\)\(\Rightarrow x\inƯ\left(150\right)\)
Vậy...................
tim x;y de -xx(2-y)=10 (1-x)x(1+y)=-15
tim x, y biet
[ xx+ yy].xy=1980
tim x :
1/6 + 1/3 + 1 /4 + ....................... 1/Xx [X+ 1} = 199/201
bài này hơi khó đây là dạng sai phân
jup minh nhe a hi hi
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
Tim x,y số tự nhiên biết
a) (2x + 1) x (2y + 1) = 31
b) (2x + 1) x (2y + 1) = 13
c) (2x + 1) x (2y + 1) = 21
Tim x :
\(\frac{x+1}{94}+\frac{x+3}{46}+\frac{x+5}{90}=\frac{x+2}{31}+\frac{x+4}{91}\)
Tim x
a, (x-12)-15=(20-7)-(18+x)
b, 27-(5-|x|)=31
TIM x
a) 4x^5-3=125
b) 31+45:x=46
c) 72-x:7=59
d) 3^x=81
e) x^5=32
f) (x-1)^4=625
tim STN x :
135 -3.(x+1)=31
Bai nay thay minh noi dung de va day la bai toan logic nen cac ban hay suy nghi nha
