(t-3)(t-3)=0

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

t-3=0

t-3=0

Set the first factor equal to 0.

t-3=0

Add 3 to both sides of the equation.

t=3

t=3

The final solution is all the values that make (t-3)(t-3)=0 true.

t=3

Solve for t (t-3)(t-3)=0