X^2-48 can be viewed as a difference of squares which would factor to:
(x+√48)(x-√48)
So b=√48
c = 150 -8s
Step-by-step explanation:
Each "snack" was 8 pieces of candy, and there were 18 of them (plus 6 candies) to start with. Hence the starting number was ...
... 18×8 +6 = 144 +6 = 150
Each snack reduced that number by 8, so the candies remaining are
c = 150 -8s
You have to do 3.75-2.25=1.5 then 1.5/0.5 which means that x=3.