SOLUTION: solve the following using the quadratic formula x^2+6x+1=0 4x^2-12x+9=0

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Question 145133: solve the following using the quadratic formula
x^2+6x+1=0
4x^2-12x+9=0
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
Both of your equations are in the form ax%5E2%2Bbx%2Bc=0. For example, for the first one: a=1, b=6, and c=1.

Just plug the values for a, b, and c into:

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

and then do the arithmetic. Notice the 'plus or minus' sign, meaning that you will have two solutions for each equation.

Also, check the number under the radical for perfect square factors, and take them out. For example sqrt%288%29=sqrt%284%2A2%29=sqrt%284%29sqrt%282%29=2sqrt%282%29

Also, note that the coefficient on the 1st degree term in your second equation includes the minus sign.