SOLUTION: Solve equation below using the quadratic formula. 1. x2+4x+3=0 Im hoping you can help me and you know the fomula Thank You, Sarah

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve equation below using the quadratic formula. 1. x2+4x+3=0 Im hoping you can help me and you know the fomula Thank You, Sarah       Log On


   

Question 2669: Solve equation below using the quadratic formula.
1. x2+4x+3=0
Im hoping you can help me and you know the fomula
Thank You,
Sarah

Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
Sarah,
Here you go with the quadratic formula, even though this equation factorises...

a=1
b=4
c=3
x+=+%28-b+%2B-+sqrt%28b%5E2+-+4ac%29%29%2F%282a%29
x+=+%28-4+%2B-+sqrt%284%5E2+-+%284%29%281%29%283%29%29%29%2F%282%2A1%29
x+=+%28-4+%2B-+sqrt%2816+-+12%29%29%2F%282%29
x+=+%28-4+%2B-+sqrt%284%29%29%2F%282%29

so, x+=+%28-4+%2B+2%29%2F%282%29 or x+=+%28-4+-+2%29%2F%282%29

so, x=(-2)/2 or x=(-6)/2
so x=-1 or x=-3

hope this helps
jon