Question

resolve into factors
$(a + b) - 4(a + b) - 12$
​

Answer 1

Answer:

(a + b) - 4(a + b) - 12 = -3 (a + b+ 4)

Step-by-step explanation:

(a + b) - 4(a + b) - 12

= (a + b) - (4a + 4b) -12

Now remove bracket

= a + b - 4a - 4b - 12

Rearrange similar terms

= a - 4a + b - 4b -12

= (1 - 4)a + (1-4)b - 12

= -3a -3b -12

(a + b) - 4(a + b) - 12 = -3 (a + b+ 4)

Answer 2

$= (a + b) - 4(a + b) - 12$

$= a + b - 4a - 4b - 12$

$= a - 4a + b - 4b - 12$

$= - 3a - 3b - 12$

$= 3(a - b - 4)$

$= (a - b - 4)$