Explicație pas cu pas:
[tex]5x ^{2} - 7x + 2 = 0 \\ 5x^{2} = - 7x = 0 - 2 \\ 5x ^{2} = - 7x = - 2 \\ 5x ^{2} = \frac{ - 7}{ - 2} \\ 5x ^{2} = 3.5 \\ x ^{2} = \frac{3.5}{5} \\ x ^{2} = 0.7 \\ x = \sqrt{0.7} \\ x = 0.83660026[/tex]
