Question

(-3c^2+c-9)(5c+6) <---- помогите пожауста

Answer 1

$( - 3 {c}^{2} + c - 9)(5c + 6) = - 15 {c}^{3} - 18 {c}^{2} + 5 {c}^{2} + 6c - 45c - 54 = - 15 {c}^{3} - 13 {c}^{2} - 39c - 54$

Answer 2

(-3c^2+c-9)(5c+6) =-15^3-13с^2-39с-54