Question

РЕШИТЕ ПРИМЕРЫ .......​

Answer 1

Ответ:

$3x(x - 5) - 5x(x + 3) = 3x {}^{2} - 15 x- 5x {}^{2} - 15x = - 2 x {}^{2} - 30x$

Answer 2

Объяснение:

$3x(x - 5) - 5x(x + 3) =3x^{2}-15x-5x\left(x+3\right) =3x^{2}-15x-5x^{2}-15x =-2x^{2}-15x-15x =-2x^{2}-30x$