Respuesta :

a. 4x+12
= 4x+ 4*3
= 4(x+3) (distributive property)

b. 8r -14
= 2* 4r -2*7
= 2(4r -7) (distributive property)

c. 5x+ 35
= 5x+ 5*7
= 5(x+7) (distributive property)