You have to tell us more about what is going on here.
What is the definition of the operation *?
How does a(a+b) work or what does a(a+b) mean?
Please give more information about this problem.
I have this problem:
a * (a + b) = a
And I can only use the commutative, distributive, identity, negation properties.
A hint that my teacher gives is to use is
a * a (a + b) = (a + 0) * (a + b)
Can anyone help me?
My teacher doesn't explain it well at all!