What are the roots of the equation? x² + 3x - 18 = 0

Answer:
[tex]x[/tex] = -6
[tex]x[/tex] = 3
Step-by-step explain
[tex]x^{2}[/tex] = 3[tex]x[/tex] - 18 =0
[tex]x^{2}[/tex] =6[tex]x[/tex] - 3[tex]x[/tex] - 18 = 0
[tex]x[/tex] x ([tex]x[/tex] + 6) -3[tex]x[/tex] - 18 = 0
[tex]x[/tex] x ([tex]x[/tex] + 6) - 3([tex]x[/tex] = 6)=0
([tex]x[/tex] = 6) x ([tex]x[/tex] 3) = 0
[tex]x[/tex] +6 = 0
[tex]x[/tex] - 3 = 0
[tex]x[/tex] = -6
[tex]x[/tex] = 3