Respuesta :

ksco1490

Answer:

3x^2 -12x -15

Step-by-step explanation:

(3x + 3)(x- 5)

you have to divide it out. (i know that sounds weird)

3x*x  +  3x*-5   + 3*x   + 3*-5

then multiply/add everything

3x^2 + -15x+ 3x+ -15

3x^2 -12x -15