Question

Question 3(f)

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

Given equation is x +4 = 2.

$\begin{array}{cc}Valueofx& Valueof(x+4)\\ & \\ \left(i\right)-2& -2+4=2\\ & \\ \left(ii\right)0& 0+4=4\\ & \\ \left(iii\right)2& 2+4=6\\ & \\ \left(iv\right)4& 4+4=8\\ & \end{array}$

Only case (i) is satisfying the given equation.

$\therefore$ x=-2 is the solution.