[tex] \sqrt{ab} = \sqrt{a} * \sqrt{b}[/tex]
[tex] \sqrt{a} + \sqrt{a}*\sqrt{b} = a[/tex]
[tex] \sqrt{a} *(1+ \sqrt{b})=a[/tex]
[tex]1+ \sqrt{b} = \frac{a}{ \sqrt{a} } [/tex] amplificam fractia cu √a
[tex]1+\sqrt{b} = \frac{a \sqrt{a} }{a} [/tex] se simplifica a cu a
[tex]1+ \sqrt{b} = \sqrt{a} [/tex] ridicam fiecare numar la patrat
[tex] 1^{2} + \sqrt{b}^{2} = \sqrt{a} ^{2}[/tex]
1+b=a
b=a-1
urmatoarele ab sunt toate cu bara deasupra
daca a=1 => b=0 => ab=10
daca a=2 => b=1 => ab=21
daca a=3 => b=2 => ab=32
daca a=4 => b=3 => ab=43
daca a=5 => b=4 => ab=54
daca a=6 => b=5 => ab=65
daca a=7 => b=6 => ab=74
daca a=8 => b=7 => ab=87
daca a=9 => b=8 => ab=98
