Question

Efetue:
a) (x + 6)?
b) (2a-6)
c) (x + 2)(x-8)​

Answer 1

Resposta:

a) (x + 6)

x + 6 = 0

x = -6

b) (2a - 6 )

2a - 6 = 0

2a = 6

a = 6/2

a = 3

c) ( x + 2 ) ( x - 8 )

2x - 8x = 2x - 16

2x - 8x - 2x = - 16

- 8x = - 16    . (-1)

8x = 16

x = 16/8

x = 2