3n+2 chia hết cho n-1
=>3(n-1)+5 chia hết cho n-1
=>5 chia hết cho n-1
=>n-1 E Ư(5)={-1;1;-5;5}
+)n-1=-1=>n=0
+)n-1=1=>n=2
+)n-1=-5=>n=-4
+)n-1=5=>n=6
vậy...
\(n^2+2n-7:n+2=>n\left(n+2\right)-7:n+2\) ) (: là chia hết)
=>-7 chia hết cho n+2
=>n+2 E Ư(-7)={-1;1;-7;7}
+)n+2=-1=>n=1
+)n+2=1=>n=3
+)n+2=-7=>n=-5
+)n+2=7=>n=9
vậy...
tick nhé
Dbhhrbbhrhhehejsushshdhdh
Jshdjdhejdurhdjdndjdjdidjxhdj
Ndjdjdndbdbbskdjowi29e7388dhehuheubu4hjm
Usjrufhfjrududioa939763689😙😘😇🫠😙😗🤗🤪🤗😘💩😓💩😓😤😓💩🤖👿☠️👿🥱😱😰😖😨😡😈😺👋✌️👋✌️👈🤘👈🫸🤌🖐🤏🙎♀️🧑🦳🙎♀️👩🦲👱♀️🧔♀️👨🦳🙎♂️🙍♀️🦻🫁👃🫦🫁🫀🫦👃🫦🧑⚕️👨🏫🤦♂️👨🏫🤷♀️🙋♀️🧏♂️👨🏫👨💻👨🔬👨💻🧑🎨👨🔬👨🚒👩💻👨🔧🤱👰🤱👰🤱👳🤵♀️🤵♂️🤰🫅👷♀️🤴🧙🧛♂️🧙🧛♀️🧜♂️🧞♂️🧟♂️👩🦯➡️👨🦼➡️👩🦯➡️👨🦼➡️🧎♀️🧎➡️👨🦼🤼♂️🧘♂️🤼♂️🤽♀️🚵🚴♀️🏋♂️⛹️♂️🚵🤼♀️🤽♂️🤹🤹♂️🗣💏🗣👨👩👧👧👩👦👩👦(^-^)/(^^)d(^_^)v;-):-);-):-)( ＾ω＾)( ￣ー￣)( ´∀`)( ￣ー￣)( ＾Д＾)( ＾▽＾)(ﾟーﾟ*)((o(^∇^)o))(* >ω<)(ﾟーﾟ*)((o(^∇^)o))( ﾉ^ω^)ﾉ(((o(*ﾟ∀ﾟ*)o)))( ・∇・)(*´ー｀*)(*´∀｀)ﾉ(*￣∇￣)ノ(*´-`)(*´∇｀)ﾉ(*つ▽`)っ(*ノ▽ノ)(*σ´ｪ｀)σ(*ノ▽ノ)(*つ´･∀･)つ(*･∀･*)(*･ω･*)(*≧д≦)(*･ω･*)(*≧д≦)(^-^*)(＾◇＾)(^-^*)(^-^)v(^^)(^^)/(^^)(^^)/(^∇^)(^〇^)(^∇^)(^∇^)(^〇^)(´・∀・)(´▽｀)(´・∀・)(´・∀・)(´▽｀)(´・∀・)(´ω｀)(´・∀・)(´ω｀)(´ｰ｀).｡*･ﾟﾟ(´_ゝ`)(´ｰ｀).｡*･ﾟﾟ(´∀｀)(´∀｀*)
