Question

Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation.

$x+4=2(-2,0,2,4)$

Answer 1

Solution.

Given equation is, $x+4=2$.

$$\begin{gathered} \therefore x=2-4 \\ \Rightarrow =-2 \end{gathered}$$

Thus, the solution of the given equation is, $x=-2$.

Now check the other given values.

Substitute, $x=0$,

$0+4=4\ne 2$

Substitute, $x=2$,

$2+4=6\ne 2$

Substitute, $x=4$,

$4+4=8\ne 2$

Hence, $x=-2$ is the solution of the given equation and the rest values do not satisfy the given equation.