x2-9x=0

Factor x out of x2.

x⋅x-9x=0

Factor x out of -9x.

x⋅x+x⋅-9=0

Factor x out of x⋅x+x⋅-9.

x(x-9)=0

x(x-9)=0

If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.

x=0

x-9=0

Set the first factor equal to 0.

x=0

Set the next factor equal to 0.

x-9=0

Add 9 to both sides of the equation.

x=9

x=9

The final solution is all the values that make x(x-9)=0 true.

x=0,9

Solve using the Square Root Property x^2-9x=0