Gọi UCLN ( 4n+3;3n+2) là d
=>4n+3 chia hết cho d => 3.(4n+3) chia hết cho 3 =>12n+9 chia hết cho d
=>3n+2 chia hết chd d => 4.(3n+2) chia hết cho d =>12n+8 chia hết cho d
=>(12n+9)-(12n+8) chia hết cho d
=>d=1
=>UCLN(4n+3;3n+2) là 1
=>\(\frac{4n+3}{3n+2}\)là phân số tối giản
CMR: Phan so P =\(\frac{3n-2}{4n-3}\)la phan so toi gian.
Chung to rang 3n - 5 phan 3 - 2n la phan so toi gian
chung to rang phan so 2n+1/3n+2 la phan so toi gian
cho A=3n+2/4n+3 cm A la phan so toi gian
cho A=3n+2/4n+3 cm A la phan so toi gian
chung to rang vs moi so tu nhien n , phan so n^3+2n/n^4+3n^2+1 la toi gian
cho A = 3N+2/6N+3
A TIM N DE a LA PHAN SO
b chung to A la phan so toi gian voi moi n thuoc N
chung minh phan so 2n+3/4n+5 la toi gian
Giup to bai nay voi : Chung minh voi n thuoc N sao phan so sau la phan so toi gian 4n+1/6n+1