Question

For which of the following equations, x = -2 is not a solution?

• A. x + 4 = 2
• B. 2x = -4
• C. 3x - 6 = 0
• D. x + 2 = 0

Answer 1

The correct option is C 3x - 6 = 0

Except option (c) all other equations satisfy have x = -2 as the solution.
a) x + 4 = 2
$\Rightarrow$ x = -2

b) 2x = -4
$\Rightarrow$x = -2

c) 3x - 6 = 0
$\Rightarrow$x = 2
Hence, it is incorrect equation for given solution.

d) x + 2 = 0
$\Rightarrow$x = -2