Question

Calcule seguinte valor : x ao quadrado - x/15 = 0

Answer 1

${x}^{2} - \frac{x}{15} = 0 \\ \\ \\ ( {x}^{2} - \frac{x}{15} ) \times 15 = 0 \times 15 \\ \\ 15 {x}^{2} - x = 0 \\ \\ \\ x(15x - 1) = 0 \\ \\ \\ x = 0 \\ \\ \\ 15x - 1 = 0 \\ \\ 15x = 1 \\ \\ x = \frac{1}{15}$