Answer:
-4.54 and 1.54
Step-by-step explanation:
This is a quadratic equation
Let Δ be our discriminant :
- a= 1
- b= 3
- c= -7
- Δ = 3²-4*1*(-7)= 37≥0
so we have two solutions : x and y
x =( -3-[tex]\sqrt{37}[/tex])/2 = -4.54
y= ( -3+[tex]\sqrt{37}[/tex])/2= 1.541
then the solutions are -4.54 and 1.54
