find the product (a-1)^4. ive tried this problem 4 times and i keep getting the answer wrong
Another option other than what Mush posted would be to take (a-1)(a-1)(a-1)(a-1)
=(a^2 - 2a +1)(a-1)(a-1)
Hopefully this will help you out a little bit. Basically what you are looking to do is use the distributive property and "FOIL" the (a-1)'s out on each other.