(October 25, 2016 at 7:48 am)Vic Wrote: Yeah, you need to assume that x=/=0 to divide by x.
And while we're at it, always remember that x^2 always has two solutions. Otherwise math teachers everywhere get mini heart attacks.
Now that I'm officially a math teacher, I can confirm that this is true. I got 3 bypass operations and emergency CPR twice just this afternoon.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
