Explicație pas cu pas:
[tex] {2.2}^{2} - \frac{12}{15} = \\ 4.84 - \frac{12}{15} = \\ \frac{484}{100} - \frac{12}{15} = \\ \ \frac{121}{25} - \frac{12}{15} = \\ \\ \frac{363 - 60}{75} = \\ \frac{303}{75} = \\ \frac{101}{25} [/tex]
