First square both sides to get:
c + 22 = (c + 2)^2
or
c + 22 = c^2 + 4c + 4
Move the terms on the left side to the right side:
c^2 + 3c - 18 = 0
Factor to get:
(c + 6) * (c - 3) = 0.
The solutions are c = -6 and c = 3.
Check to see if these answers work by plugging them into the original equation:
c = -6:
sqrt (-6 + 22) ?= -6 + 2
But, -6 + 2 is a negative number, and you can't get a negative from a square root. So, -6 is extraneous.
c = 3:
sqrt (3 + 22) ?= 3 + 2
5 = 5. So, 3 works.
The answer is: B
I made a risky challenge because I wanted to make a joke. I handled it by just taking it truthfully and just say that it was a joke.
Answer:
10
Step-by-step explanation:
6s^2; where s is the side length
Hello!
With inequalities are solved just like equations. I will solve both below.
4x-3+3>5+3
4x/4>8/4
x>2
-2x-7+7>1+7
-2x/-2>8/-2
x>-4
Our solutions are x>2 and x>-4.
Hope this helps!
