SOLUTION: Expand Q1 (a-3b)2

Question 147513: Expand
Q1 (a-3b)2

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Expand. Remember something like .

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.

So FOILS to .

In other words, .

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