How do you multiply #(5 - 8y)^2#?
Ok, so we start by rewriting it as two separate binomials.
So now we multiplying the two binomials by the FOIL method. we have and get
So we would double check our work to ensure we didn't miss multiplying a number by another number, otherwise it wouldn't come out right. So we can combine like terms and get:
But, you would want to put it to the highest degree first as some people would want that.
So the final answer is:
To expand double brackets you need to multiply all of the terms in each bracket by the terms in the other bracket.
Applying the distributing rule
So expanding this one you must do:
Add these terms together and you get the answer: