Question

6x-12a+3.(6a+3)parax=-2 e a=1

Answer 1

6x - 12a + 3.(6a + 3)

Para: 

x = -2
a = 1

6 . (-2) - 12. (1) + 3.(6.(1) + 3)

-12 - 12  +  3 . (6 + 3)
-24 .+ 3 . 9
-24 + 27
=> 3