Question

Solve the problem X(x+3)=18

Answer 1

1. write out your equation
$x(x + 3) = 18$
2. distribute
$(x \times x) + (3 \times x) = 18$
Simplify
${x}^{2} + 3x = 18$
Move all terms to one side
${x}^{2} + 3x - 18 = 0$
Factor
$(x - 3)(x + 6) = 0$
Substitute x so the equation equals zero
$x = 3$
$x = - 6$