Answer:
11x
Step-by-step explanation:
Forget about the x until the end and add the numbers together.
Answer:
9y + 4z + 9x
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
Substitute x = 6 into f(x), that is
f(6) = 2(6) + 8 = 12 + 8 = 20
Answer:
Option A. 
Step-by-step explanation:
we know that
A perfect square trinomial is equal to

In this problem we have

equate the equations and solve for a

so


therefore
the perfect square trinomial is equal to 