Question

Tìm các chữ số a và b,biết \(\overline{a,b}\)x \(\overline{ab,a}\)=  \(\overline{ab,ab}\)

Answer 1

Ta có : 

\(\overline{a,b}.\overline{ab,a}=\overline{ab,ab}\)

\(\Leftrightarrow\)\(\left(\overline{a,b}.10\right)\left(\overline{ab,a}.10\right)=\overline{ab,ab}.100\)

\(\Leftrightarrow\)\(\overline{ab}.\overline{aba}=\overline{abab}\)

\(\Leftrightarrow\)\(\overline{ab}.\overline{aba}=\overline{ab}.\left(100+1\right)\)

\(\Leftrightarrow\)\(\overline{aba}=101\)

\(\Rightarrow\)\(a=1\)\(;\)\(b=0\)

Vậy \(a=1\) và \(b=0\)

Answer 2

a=1

b=0

Answer 3

cách làm

Answer 4

\(\text{a,b.ab,a=ab,ab}\)
\(\Rightarrow\)\(\text{ab.aba=abab}\)
\(\Rightarrow\)\(\text{ab.aba=ab.101}\)
\(\Rightarrow\)\(\text{aba=101}\)
\(\Rightarrow\)\(\text{(a;b)=(1;0)}\)
\(\text{Vậy (a;b)=(1;0)}\)

Answer 5

a = 1 ; b = 0 . các bạn k cho mk nhé