`cho a+b=9
ab-ba=45.tim ab (ab va ba co gach tren dau)
cho ab(co gach tren dau)=(a+n)(b+n)
tim n lon nhat co the
cho ab(co gach tren dau)=(a+n)(b+n)
tim n lon nhat co the
cho ab(co gach tren dau)=(a+n)(b+n)
tim n lon nhat co the
a) Tim ab biet 2ab * 3 =ab5 ( co gach ngang tren dau nhe )
b) Tim 1 so tu nhien co 3 chu so, biet rang neu chuyen chu so 8 tan cung cua so do len dau thi duoc 1 so gap 3 lan so cu va them 22 don vi
Giup mink giai mik cho 3 tick
cau 1
so tu nhien lon nhat co 4 chu so ma khi chia cho 11,13,17 deu du 7 la.......
cau2
neu a,b,c la ba chu so ma abc+acb=ccc,b=.........
(abc,acb,ccc,co dau gach ngang tren dau)
A. Danh dau hai diem c va d tren duong phan gia co ta do lan luot la -2,3 . Tim tung do cua diem a ,b
B. Danh dau hai diem c va d tren duong phan giac co tung do la luot la 1 va -4
giai giup bai nay tim 3 so a,b,c biet (a+b+c)^3=abc (co dau gach tren dau) .giai can ke ra dum nha
cho a b c doi mot khac nhau va khac 0 biet ab la so nguyen to va ab/bc=b/c tim abc (ab, bc,abc co gach ngang)
cho a b c doi mot khac nhau khac 0 biet ab la so nguyen to va ab/bc=b/c tim abc(ab,bc,abc co gach ngang)