Bai 1: Tim x va y

a) ( x+ 5) .( x-3) = 15

b)( 2x -1).(y + 2) =24

c)x.y+y+x =30

d) 3x.y+2x +2y=0

Bài 2: tìm các số nguyên tố P 

a) de P +2;P+94 cung la so nguyen to

b) de P+6;P+8;P+12;P+14 cung la so nguyen to

tim cac so nguyen to x va y sao cho cac so 5x+y va xy+13 cung la so nguyen to

giai nhanh giup minh nha mai minh phai nop roi

Tim x nguyen de moi phan so sau co gia tri la so tu nhien 

a)x+6/x+1

b)x-2/x+3

Cac ban giup minh nhe !

1.Tim cac chu so x va y de so 1x8y2 chia het cho 36

2.tim cac gia tri nguyen cua n de phan so A=3.n+2/n-1 co gia tri la so nguyen

3.tim cac chu so x y thoa man 

(x-2)^2.(x-3)^2=4

4.tim so tu nhien x biet 

(x-5):3/100=20.x/100 +5

1. Tim so nguyen to sao cho:

p+2;p+6;p+8;p+12;p+14 cung la so nguyen to.

2. Tim x biet:

60 = \(2^x\) * 3 * 5 va 60 co 12 uoc.

xin loi cac ban nha, may minh khong danh dau duoc, mong cac ban thong cam va lam dum minh nha!Cam on cac ban!

Tim cac so nguyen x,y biet:a)*x2 -3*x+1 chia het cho x+2 b)x2-xy = 5x-4y-9 c) (x2-8)*(x2-15)<0 d) (x+1)2+(y+1)2+(x-y)2=2 e) (x2-4)x2>0 ai lam truoc minh tick,mai minh di hoc rui,lam giup minh di pls Thank ban truoc ne ;(

a)Tim cap so tu nhien x,y biet (x-2)(y-3)=5

b)Cho p la so nguyen to lon hon 3.Chung minhh rang: (p-1)(p+1) chia het cho 24

c)Tong cua nam so tu nhien lien tiep co tan cung bang chu so nao?(co giai thich)

              LAM NHANH GIUP MINH NHA