Answer:
(x + 2)^2 - 1
Step-by-step explanation:
x^2 + 4x + 1
= (x^2 + 4x + 2 - 2 + 1)
= (x + 2)^2 - 1
Answer:
D. 0.34
Step-by-step explanation:
0.24²+0.31²=x² then you find the square root
So for this, we can simplify √63 as such:

Using the simplified version of √63, we can solve it:

Zero is your final answer.
Answer:
The runners drank 661 bottles of water.
Step-by-step explanation:
Subtract 661 from 750, and you are left with 89.