Simplifying Boolean Expression with Boolean Algebra

[ece1111]

can anyone help me simplify this expression..
f(x,y,z)=(x+y+z')(x+y'+z')(x'+y'+z)..

 

[cobalt124]

OK, not sure whether this is homework or not, so I can't give you an answer, (even if mine's right at the moment), so I suggest you "multiply it out" and simplify what can and see if we get the same answer.

 

[Outlined]

use this rule $$(a + b)c = ac + bc$$ repeatedly.
you also have $$aa'= 0$$

hope this helps