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):
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1. Apply the formula
,
Second example (click here):
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1. Apply the formula
,
Last example (click here):
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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