50 = x^2
To isolate x you need to do the opposite of an exponent, which would be square root.
= x
That is the exact form, in other words your answer, if teacher is looking for a decimal, it would be
7.07 = x
Answer:

Step-by-step explanation:
the minimum of f is for x = 1 and f(1)=0
f is decreasing for x<=1 and increasing for x>=1
so the domain is 

x>=1 so x is positive and we can take the square root
so 
Answer:
32.4
Step-by-step explanation:
14 3/5 = 14.6
14.6*6=87.6
120-87.6=32.4
Answer:
-9
Step-by-step explanation: