Question

tentukan nilai X yg memenuhi persamaan |4× - 2|= 18​

Answer 1

Resposta:

|4× - 2| = 18​

Resolução:

4x - 2 = 18  e 4x -2 = - 18

4x - 2 = 18

4x = 18 + 2

4x = 20

x = 20/4

x  = 5

4x -2 = - 18

4x = - 18 + 2

4x = - 16

x = - 16/4

x  = - 4

S ={ -4; 5}