Respuesta :

Answer:

3x(to the 2nd) + 19x-40

Step-by-step explanation:

Answer:

3x^2+19x-40

Step-by-step explanation:

distribute the parenthesis

so 3x*x and 3x*8

which gives you

3x^2+24x

distribute the -5

-5*x and -5*8

which gives you

-5x-40

now put thos together

3x^2+24x-5x-40

combine like terms

3x^2+19x-40