# Step-by-step Solution

## Solve the product $\left(a+3b\right)\left(a-3b\right)$

Go!
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### Videos

$a^2-9b^2$

## Step-by-step explanation

Problem to solve:

$\left(a+3b\right)\left(a-3b\right)$
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Solve the product of difference of squares $\left(a+3b\right)\left(a-3b\right)$

$a^2-\left(3b\right)^2$
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The power of a product is equal to the product of it's factors raised to the same power

$a^2-9b^2$

$a^2-9b^2$

### Problem Analysis

$\left(a+3b\right)\left(a-3b\right)$

Special products

~ 0.82 seconds