SOLUTION: How do I multiply {{{(4ab-1)^2}}}, should I multiply it using foil or is there another option?

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Question 118317: How do I multiply , should I multiply it using foil or is there another option?
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Start with the given expression


Expand. Something like is the same as

Now let's foil the expression


Remember, when you FOIL an expression, you follow this procedure:


Multiply the First terms:


Multiply the Outer terms:


Multiply the Inner terms:


Multiply the Last terms:


Now collect every term to make a single expression



Now combine like terms


---------------------
Answer:
So foils and simplifies to

In other words,


note: there is another way to do this problem, but I'm not sure if your math class has covered it or not.

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