How to find x for a secant and a tangent line of a circle

The video tutorial explains the relationship between tangent and secant lines, introducing a formula to calculate unknown values. It demonstrates how to apply this formula using given values and solve for an unknown variable, X, through algebraic manipulation.

What is the value of X after applying the distributive property in the equation?

What steps are taken to isolate X in the equation derived from the tangent and secant relationship?