Explain why the equation (x-4) 2 -28=8 has two solutions. Solve the equation to find the solutions. Show work. what did I do wrong for the equation

Explain why the equation (x-4)2-28=8 has two solutions. Solve the equation to find the solutions. Show work.

what did I do wrong for the equation below?

x2-6x-7=0

x2-6x=7

x2-6x+9=7+9

(x-3)2=16

x-3=16

x=19

x-3=-16

x=-13

please show your work compared to mine.

Use the quadratic formula to solve x2-4x+3. Then describe the solution???