Răspuns:
[tex] \frac{a}{0.1} = \frac{a }{ \frac{1}{10} } [/tex]
[tex]10a = 20b | \div 10 [/tex]
[tex]a = 2b[/tex]
[tex]17 + a \times b = 17 + 2b \times b[/tex]
[tex]17 + 2b ^{2} [/tex]
[tex] {b}^{2} = 8.5[/tex]
[tex]b = \sqrt{8.5} = \sqrt{ \frac{17}{2} } = \frac{ \sqrt{17} }{ \sqrt{2} } [/tex]
[tex]b = \frac{ \sqrt{34} }{2} [/tex]
[tex]a = 2 \times \frac{ \sqrt{34} }{2} [/tex]
[tex]a = \sqrt{34} [/tex]
