Question

Show that x=2 is a solution of the equation x^3-x-6=0

Answer 1

X^3-X-6=0
X=2
2^3=8
8-2-6=0
8-2=6
6-6=0

Answer 2

You insert 2 instead of x and then check if the equation is correct. You get:


`2^3-2-6=8-2-6=0`, thus
`x=2` is a solution.