Solution: The commutative property of addition states that when two numbers are being added, their order can be changed without affecting the sum.
Hello, hope this makes some sense, the midpoint formula is what’s given in the picture and the rest is just substitution



with that template in mind, let's see,

so, to shift it to the right by 2 units, simply set C = 2.
to stretch it by 2, set A = 1/2.
the smaller A is, the wider it opens, the larger it is, the more it shrinks.
a^4+2a+8 because if you combine like terms that is what you get