Provide an appropriate response.
-Which one of the following methods cannot be used to solve the equation $x ^ { 2 } - 4 x - 6 = 0$
A) All of the methods can be used.
B) Quadratic formula
C) Factoring
D) Completing the square

Question

Quizplus · Accepted Answer

The equation $x^2 - 4x - 6 = 0$ cannot be factored easily into integer factors, so factoring is not a suitable method for solving it. The quadratic formula and completing the square can be used for any quadratic equation.

Provide an Appropriate Response x2−4x−6=0x ^ { 2 } - 4 x - 6 = 0x2−4x−6=0

Provide an Appropriate Response $x ^ { 2 } - 4 x - 6 = 0$