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=> có số ước là : (2016+1).(2016+1)=2017.2017=4068289
các bạn cho mk vài li-ke cho tròn 1140 với
http://image.slidesharecdn.com/tuyntp100luynthihcsinhgiitonlp6cpn-140910120254-phpapp02/95/tuyn-tp-100-luyn-thi-hc-sinh-gii-ton-lp-6-c-p-n-1-638.jpg?cb=1426881449 trang 104,105
tick cho minh nha minh nha de co tron 65 diem!!!!!!!!!!!!!
A = 10002015+2016 = 10004031
B = 10004031
=> A = B
#Học tốt!!!
\(3a,\frac{2n+15}{n+1}\) là số nguyên
\(\Leftrightarrow2n+15⋮n+1\)
\(\Leftrightarrow2n+2+13⋮n+1\)
\(\Leftrightarrow2\left(n+1\right)+13⋮n+1\)
\(\Leftrightarrow13⋮n+1\) ( vì \(2\left(n+1\right)⋮n+1\)và \(\left(n+1\right)\inℤ\) )
\(\Leftrightarrow n+1\inƯ\left(13\right)\left\{\pm1;\pm13\right\}\)
Đến đây bn lập bảng xét để tìm n.
22016 + 52016 = 132901150760150400933474662701093632444139156230245797983451739952061292318821219082408733380123716446923280138816148691348332250549138432694744733040207471635460062291111714453852983450163412839478432674285466723489853471331344961752024356711039744998722729088056022242066820496791634992123859739046602165056020296822649485842368328334914700117232737216924944154499322138498785527017914889599336202481672782191035035874706832781528727280801652013578429369125463744179027114136759472454584397133928400078670849997607302892223027036473470262496682733564340461161715868386687990733274505753924648948618963125139438987342574828670180634045054186337242659614976824201571903960747675319866959366451316077662320815346287052220792434027927921187356889656584951394657674940726699259495071241216158196484638282899129926043468476122186087974330754959371992208791705358656881800928429702678388643638343301207921761933484519922375263361343859106072274925166866121351018610163311604363020243260904280037693432849523958593887999150374470479509752857850978454895803249872284355097092959586741257663922098963526868979888816380015982800292569096211947654243246826953362180188628667124501820207471536265358451825127752887288777792308384701958615718334082004973351029430513419860406729867915254871805830680868663182759201972502428624488367802218500062438162747843014776792024707986674257702627103476926577534748275809352252076161
và m + n có 1410 chữ số