have to put it was 2x and not x2
--back to the problem--
2x-x-4=0
x=4
* * * * *
True, but the question, in all likelihood WAS x2 - x - 4 = 0
and the solutions to that equation are -1.561553 and 2.561553
r=0 is the solution...
m = 0
Yes, it is the only solution.
Yes.
a = [ 0, 4 ]
root
The two equations are linear.
2*8 - 4*4 = 0, otherwise insert "does not" before equals.
-2
one
When you get an answer like 0=6 it would be no solution.
0 = 12 is neither. It is a false statement.