solving quadratics

[Mac_dw]

Xsquared = 15

I'm not sure whether to square root both sides (X= square root 15)

or whether to subtract 15 from both sides
then add a 0X (to make it a trinomial)

and then use Quadratic equation where A=1, B=0, C=-15

Please Help???

 

[tkhunny]

The quadratic formula is more reliable. It will remind you to find BOTH solutions. Using the square root, you must remember this yourself.

 

[Mac_dw]

so will the answer end up being the same either way???

 

[tkhunny]

Only if you remember. Unique solutions don't care how you find them. That's why they are called "unique".