Answer:
![(x+1)^{2} +4](https://tex.z-dn.net/?f=%28x%2B1%29%5E%7B2%7D%20%2B4)
a = 1
b = 4
Step-by-step explanation:
hope this helps!! p.s. i really need brainliest :)
Answer: 15 and 10
Step-by-step explanation: P=(15*2)+(10*2)
30+20
50
Answer:
8.77777777778
Step-by-step explanation:
B. All real numbers :)
The only conern here is that you are able to square x. Since the square of any real number gives a real number answer, then that is the domain.
If the function was
![\sqrt{x}](https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D)
, then the domain woudl be all POSITIVE real numbers since you cannot take the square root of a negative number. Try it on your calculator! you will get an error! Domain simply means all possible values for x that actually give real number answers.
(the opposite of a real number is an imaginary number, like 'i' = [tex]\sqrt{-1}[tex]. You can see that you cannot sqrt a negative number, yet, in quantum mechanics 'i' is used all the time because it makes things work in calculations.