Respostas

2013-11-24T13:39:03-02:00
(x-4)(x+3)+x=24
x²+3x-4x-12+x=24
x²+4x-4x=24+12
x²=36
x=\sqrt 36
x= \pm 6
2013-11-24T13:39:14-02:00
(x - 4) (x + 3) + x = 24
x2+3x-4x-12+x=24
x2
+3x-4x+x=24
x2=24