Posted by **Sam** on Sunday, January 10, 2010 at 4:45pm.

I'm using the quadratic equation and I understand how to use it, but the format my text book gives the answers in is what I don't understand.

If I have (2+/-Sqrt(8))/2

I know that x can either equal 2.41 or -0.14

However, my textbook is giving me the answers as 1+Sqrt(2) and 1-Sqrt(2)

I understand where the 1+/- comes from, but how are they getting Sqrt(2)?

I hope you can understamd what I mean. I'm confised, so I wasn't sure how to word the question correctly, but I hope you can see where I am having trouble.

Thank you.

## Answer This Question

## Related Questions

- math - (4.35E-2 - x)(7.56E-2 -x ) ============================ (0.324 + 2x)2 ...
- Math - I have a problem that states to simplify. The equation is d=sqrt(x^2+(4-x...
- math,help - how can i factor this out completly x^4+x^3-12 i know that4*-3=-12 ...
- Math - In school we're learning to use the quadratic formula. I understand how ...
- Math - In school we're learning to use the quadratic formula. I understand how ...
- QUADRATIC EQUATION - r^2+8r=48 First bring the 48 to the other side of the ...
- math,help,algebra I - I need help can someone help me get unstuck and let me ...
- Math - Use the quadratic formula to solve each of the following quadratic ...
- algebra - Solve the following equation: k2 + 4k = 0 By factoring and By using ...
- Math ,help - how can i simplify this more its for the following problem: Problem...

More Related Questions