Question

алгебра 35 помогите!!!!!!!!!!!!!!!!

Answer 1

$- 24c { }^{2} \times \frac{ - 2c - 4}{6} + 15c {}^{2} \times \frac{ - 2c - 4}{3} = - 4c {}^{2} ( - 2c - 4) + 5c {}^{2} ( - 2c - 4) = 8c {}^{3} + 16c {}^{2} - 10c {}^{3} - 20c {}^{2} = - 2c {}^{3} - 4c {}^{2}$