Question

solução da inequação (3x + 6) (x-4) > 0

Answer 1

(-3x + 6) (x-4) > 0

3*(-x+2)*(x-4) > 0

(-x+2)*(x-4)  >0

(-1)* (x-2)*(x-4) > 0         .......(x-2)*(x-4) < 0                                                                   x'=2   e x''=4                                                                                                                    ++++++++++++++++++++(2)-------------------------------(4)++++++++++++                 2<x<4  é a resposta