Posted by Ann on Thursday, May 15, 2008 at 7:40pm.
How do you know when an equation has infinitely many solutions?
How do you know when an equation has no solution?

Algebra help please!  Reiny, Thursday, May 15, 2008 at 8:17pm
If the variable drops out, and you end up with a true statement, then there is an infinite number so solutions,
if the end statement is false, there is not solution
e.g.
2x  4 = 2(x2)
2x4 = 2x4
0 = 0 ..... infinite number of solutions
2x4 = 2(x5)
2x4 = 2x10
4 = 10 ... false!, no solution 
Algebra help please!  Ann, Thursday, May 15, 2008 at 10:36pm
Thank you

Algebra help please!  Anonymous, Monday, March 14, 2016 at 11:48am
X^2+8x+10=0