Step-by-step explanation:
x^2+2x+7y=15
7y=15-x^2-2x
y=15/7-1/7x^2-2/7x , x ∈ all real numbers
Answer:
a. 
b. 
Step-by-step explanation:










Hope it is helpful....
Answer:
2
Step-by-step explanation:
We will substitute a, b, c to the our formula
(2*5-2)/4 = 8/4 = 2
Answer:
2x+5y+1=0
y=
Step-by-step explanation: