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Answer: 
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3*sqrt(7)
3 times the square root of 7
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Explanation:
I'm assuming the V stands for square root. You can write sqrt(63).

The idea is to factor 63 in such a way that one factor is the largest perfect square possible, that way we can pull the root apart to simplify as shown above. The rule I used for the second step is 
What are you trying to say? do you actually need help or what?
Answer:
1,x=6
2,x=4
Step-by-step explanation:
5x+12
12_5=6
6x+2
6_2=4
Answer:
a= 1 b= 0.0625 c= 0.0039 d= 1 e=0.4444 f= 0.1975
Step-by-step explanation:
Plug the x into the equation