Let’s take a look at the formula:

Here’s the proof:

Now, let’s see some examples using the perfect squares formula.

First example (click here):

Expand

1. Apply the formula

,

Second example (click here):

Expand

1. Apply the formula

,

Last example (click here):

Expand

1. Apply the formula

,

The more you practice these problems, the faster you will be able to do them. I’ve used this formula so much, that now, I don’t need it since I can do it all mentally. For more help or practice on this topic, check out Symbolab’s Practice.

Until next time,

Leah

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