SOLUTION: Hello, I am having a really hard time understanding this question. Can someone please help me. Thank you in advance. Solve the equation using the quadratic formula. 1. 3x^2+12x

Algebra ->  College  -> Linear Algebra -> SOLUTION: Hello, I am having a really hard time understanding this question. Can someone please help me. Thank you in advance. Solve the equation using the quadratic formula. 1. 3x^2+12x      Log On


   

Question 879559: Hello, I am having a really hard time understanding this question. Can someone please help me. Thank you in advance.
Solve the equation using the quadratic formula.
1. 3x^2+12x+2=0
I substituted all the values into the quadratic formula, but I got stuck when I got to -12 +/- sqr. root of 120/6. Please help me!!
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation using the quadratic formula.
1. 3x^2+12x+2=0
a=3, b=12, c=2
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-12+%2B-+sqrt%2812%5E2-4%2A3%2A2+%29%29%2F%282%2A3%29+
x+=+%28-12+%2B-+sqrt%28144-24%29%29%2F%286%29+
x+=+%28-12+%2B-+sqrt%28120%29%29%2F%286%29+
x+=+%28-12+%2B-+sqrt%284%2A30%29%29%2F%286%29+
x=(-12±2√30)/6=-2±√30/3