# How do you multiply #(1+3a)(1-3a)#?

##### 3 Answers

#### Answer:

The answer to this expression would be

#### Explanation:

When multiplying

For instance, in the example above (letter C), you start by multiplying

Later on, you multiply

Finally, you multiply

Now apply this new knowledge to the problem

1.Multiply

2.Multiply

3.Multiply

4.Multiply

Now combine like terms.

The answer is

#### Answer:

Difference of squares

#### Explanation:

If you look at the 2 factors carefully you should recognise them as the factors to the difference of squares.

If

Similarly here.

#### Answer:

#### Explanation:

The objective of this question is to teach you that

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Multiply everything in the right hand side (RHS) bracket by everything inside the left hand side (LHS) bracket.

Note that the + from

But

But