U r going to subtract 3 from each side of the equation....leaving you with :
x^2 + 2x = -3
I’m just “answering” this because brainless told me to help out 4 ppl so
Answer:

Step-by-step explanation:
From the question we are told that:
Height of first draw down 
Pump Discharge 
Well 1 depth 
Transmissivity
Radius
Well 2 depth 
Generally the Thiem's equation for Discharge is mathematically given by




Answer:
C: 6
Step-by-step explanation:
Let's work backward. If that ? is replaced by 6, we have:
x^2 + 12x + 36 = (x + 6)^2.
The coefficient in question is 6.