Question

6 номер! срочно пж! ​

Answer 1

$(5m - 1)(m + 1) - 5m(m + 2) = 5 {m}^{2} + 5m - m - 1 - 5 {m}^{2} - 10m = - 6m - 1 = - 6( - 1 \frac{5}{6} ) - 1 = 11 - 1 = 10$