Question

СРОЧНО ПОЖАЛУЙСТА!!!!!!!!!!!

Answer 1

$19ab(20 {a}^{2} - {b}^{2} ) + 20ab( {b}^{2} - 19 {a}^{2} ) = 380 {a}^{3}b - 19a {b}^{3} + 20a {b}^{3} - 380 {a}^{3} b = a {b}^{3} = 10 \times ( { - 5)}^{3} = - 1250$

Answer 2

Ответ:

-1250

Объяснение:

$19ab(20 {a}^{2} - {b}^{2} ) + 20ab( {b}^{2} - 19 {a}^{2} ) \\ 380 {a}^{3} b - 19a {b}^{3} + 20a {b}^{3} - 380 {a}^{3} b \\ a {b}^{3} \\ 10 \times ( - 5 {)}^{3} = - 10 \times 125 = - 1250$