1.) D
2.) D
3.) C
4.) C
5.) 56 and 90 I looked for the pattern and followed it.
Get someone else to do 6 I cant
<h2>Answer:
</h2><h2>14. 2z + 3yz - 6z +2yz + y - z - 4y
2z - 6z -4z - z
-5z + 3yz + 2yz + y - 4y 3yz + 2yz
-5z + 5yz + y - 4y
</h2><h2>Answer = -5z + 5yz - 3y </h2><h2 /><h2>15. -4ab + 3ax + ba - 6xa
-4ab + ba
Answer = -5ab - 3xa </h2><h2 /><h2>16. -c(3b - 7a)
-3bc - 7ac
Step-by-step explanation:
</h2><h2>Hopes this helps. Mark as brainlest plz!</h2>
B - check your answers and present the solution
Let's take a look at a perfect square trinomial.

We can distribute this expression to get

.
An important relation to recognize here is that the constant is the square of half of the x value.
Now, if we wanted to add a number to

to make a perfect square trinomial, we could have the value of x and then square it.
Half of 16 is 8, and 8 squared is