12 + 26 + 125 = 163
163 + 0.056(163) = 163 + 9.13 = 172.13
Answer:

Step-by-step explanation:
We see that the two terms share an x, so we can pull that out:

Now notice that we have a difference of squares (
). Given a difference of squares,
, this can always be factored into
. We can use this in this case:
.
So, our final factorized form is:
.
Hope this helps!
Answer:
<h2>2.2</h2>
Step-by-step explanation:
Use the cosine law:

We have:

Substitute:

Answer:
A real number that is not rational is called irrational. Irrational numbers include √2, π, e, and φ. The decimal expansion of an irrational number continues without repeating. Since the set of rational numbers is countable, and the set of real numbers is uncountable, almost all real numbers are irrational.
Step-by-step explanation: