Answer:
x = 
Step-by-step explanation:
(x + 6 )^2 = 49
get rid of the square , by square rooting the 49
x + 6 = 
x =
-6
x = 
means + or - hence it could be -7 -6 = -1 ... or 7-6 = 1
therefore the answer is = or - 1
hence in terms of roots .. answer is :

The answer is 3/8. Christopher with have to share 3/8 of pie with each of his friends.
See photo for complete solution
1/2 dozen pencils in 1/3 box
what about 1 dozen
we cross miltiply this to get
1/3*2=2/3
doing the same for all the questions we get
1/4*5/4=5/20
3/4*5/3=15/12
3/10*12/7=18/35