Let's factorise it :

![\: {\qquad \dashrightarrow \sf {x}^{3} (x + 3) + [-5(x + 3)] }](https://tex.z-dn.net/?f=%5C%3A%20%7B%5Cqquad%20%20%5Cdashrightarrow%20%5Csf%20%20%20%20%7Bx%7D%5E%7B3%7D%20%28x%20%2B%203%29%20%2B%20%5B-5%28x%20%2B%203%29%5D%20%20%7D)
Using Distributive property we get :



⠀
Therefore,

I believe the next one would be 13.2 because if you add 8.4 to -6.4 it gets 4.8 so you just do the same thing
Answer:
the first slot is 6.3 and the second is 14.7
Step-by-step explanation:
you divide 10.5 and 5 to find out how many trees you need to build one cabin. when you divide them, you get 2.1. you then multiply 2.1 to how ever many cabins are being built
Answer:
Cool
Step-by-step explanation:
Answer: x^2 - y ^2 − 1.5x + 1.5y
Step-by-step explanation: