Solve the Quadratic Equation Using the Method That Seems Most $x ^ { 2 } - 10 x = 20$

Multiple Choice

Solve the quadratic equation using the method that seems most appropriate to you. $x ^ { 2 } - 10 x = 20$

A) $\{ 10 \pm 6 \sqrt { 5 } \}$
B) $\{ 10 - 6 \sqrt { 5 } \}$
C) $\{ 5 \pm 3 \sqrt { 5 } \}$
D) $\{ 5 - 3 \sqrt { 5 } \}$
E) $\{ 10 + 6 \sqrt { 5 } \}$