Question

YxY= 613x Y

Answer 1

\(y\cdot y=613\cdot y\)

\(\Leftrightarrow y^2-613y=0\)

\(\Leftrightarrow y\left(y-613\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}y=0\\y=613\end{cases}}\)

Vậy....

Answer 2

vì YxY=613xY nên Y=613

Answer 3

\(y\times y=613\times y\)

\(y^2=613\times y\)

\(613=y^2:y\)

\(613=y\)

\(\text{Vậy y = 613}\)