Question

Me salvem por favorr ​

Answer 1

Resposta:

a) x . ( y + z ) = x . y - x.z => xy + xz

b) x . ( y - z ) = x . y - x.z => xy - xz

c) (a + b) . c = a . c + b.c => ac + bc

d) (a - b) . c = ac - bc

e) (-a -b) .c = -ac -bc

f) -x . (y + z) = -xy - xz

g) -x . (y - z) = -xy + xz

h) -x . (-y - z) = xy + z

OBS: - x - = +

        - x + = -

        + x + = +