-b (+/-) sqrt(b^2 - 4ac)
x = -----------------------------
2a
Try not to use this unless you cannot solve using a criss cross method.Originally posted by The Red Guy
Solve simulatneously, which means like equate first equation to 2nd:
1 = 2
Or draw a curve.
Originally posted by Mahoro
Or use a TI-83+
Then again, I'm in calculus, so a lot of stuff like this is done by calculator to save time.
Originally posted by conkermaniac
The easiest method is to factor (if you can). The next best thing is to use the quadratic formula:
Code:-b (+/-) sqrt(b^2 - 4ac) x = ----------------------------- 2a
Easy to remember, easy to use.