Answer:

Step-by-step explanation:
The equation to solve is:

To get rid of the "square", we need to take square root of both sides:

Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:

So these are 2 answers for x.
Answer:
The answer is 25 cm.
Step-by-step explanation:
-2+2=0 because on the number line -2 is two spots from 0 then when u add a positive 2 it equals 0.