Answer:
x = 2.618, -0.382
Step-by-step explanation:
x²+3x+1=0
Using the formula [x+(b/2)]²-(b/2)+c , substitute all your variables.
[x+(3/2)²]-(3/2)²+1=0
[x+(3/2)²]-(9/4)+1=0
[x+(3/2)²]-(5/4)=0
x+(3/2)²=5/4
x-(3/2)=±√(5/4)
x=√(5/4)±(3/2)
x=√(5/4)+(3/2) , √(5/4)-(3/2)
x=2.618 , -0 382
hope this helps :')
