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General

Easy

Question

# How can you use polynomial identities to multiply expressions ?

## The correct answer is: Thus, the expansion is: .

### Hint:

Let a and b be variables or real numbers, then:

We are asked to explain how you can use the polynomial identities to multiply expressions.

Step 1 of 2:

Here, the given expression is , where .

So, we can use the identity to find the expansion of .

Step 2 of 2:

Apply the polynomial identity, to get the answer of Thus, we have:

Thus, the expansion is:

Note:

Any expression of the form can be expanded using the identity rather than using the conventional and time taking method of multiplying them, .

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