Answer:

Step-by-step explanation:
Given
x² + x
To complete the square
add ( half the coefficient of the x- term )² to x² + x
x² + 2(
)x + (
)² = x² + x + 
= (x +
)² ← perfect square
Answer:
this is not a function
Step-by-step explanation:
the bottom numbers need to connect
R. It is not in the same plane as C, D and E