Friday

July 25, 2014

July 25, 2014

Posted by **Rachelle** on Wednesday, November 12, 2008 at 4:51pm.

-8/2, but I am also supposed to get 2/2. How do you get 2/2? Thanks!!

- Algebra II -
**drwls**, Wednesday, November 12, 2008 at 5:32pmThe factored equation tells you right way that the answers are -4 and 1.

Apparently, they also want you to derive that result using the quadratic equation

x = [-b +/-sqrt(b^2-4ac)]/2a

= -3 +/-sqrt(9+16)]/2 =

= (-3 +/-(5)/2 = 2/2 or -8/2 = 1 or -4

What you plug into "the long equation" is the values of a, b and c in the polynomial, NOT x.

**Related Questions**

Math - Algebra - A. Solve the following quadratic equations. Make sure to show ...

PreAlgebra - Identify in the following equation is quadratic or linear? y=10^3x ...

algebra - Hi Dear Jiskha team, I have Algebra homework and I will need some help...

algebra - Can you use algebra to find a quadratic equation if your know the ...

algebra II - I'm quite clueless as to how to solve this. I know the quadratic ...

ALGEBRA - What does it mean to give the solutions to the following quadratic ...

algebra - which quadratic formula would be used to solve the following quadratic...

Math - Use the quadratic formula to solve each of the following quadratic ...

Algebra - For this equation x^(2) + x + 2 which you can't factor but then you ...

algebra - Solve the quadratic equation: 2x(squared)+6x+12=0 I know you have to ...