Respuesta :

Selena328

Answer:

The solutions are given below:

Step-by-step explanation:

x(x-3)+4(x²+2)

= x²-3x+4x²+8

= x²+4x²+8-3x

= 5x²+8-3x

2(a+5)-3(a+7)

= 2a+10-3a-21

= 2a-3a+10-21

= -a-11

xy(x²yz-xy²z+xyz²)

= x³y²z-x²y³z+x²y²z²

-4(a²-2a+8)

= -4a²+8a-32

Hope it helps !
2.2 answer by expanding the brackets
= 2a + 10 - 3a - 21
= -a - 11

2.4 answer
= -4a^2 + 8a - 32