I need help on this math please help me on this tnx

Place the following steps in order to complete the square and solve the quadratic equation,

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

8.74 rounded to the nearest whole number