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Step-by-step Solution

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

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Answer

$a^2-9b^2$

Step-by-step explanation

Problem to solve:

$\left(a+3b\right)\left(a-3b\right)$
1

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

$a^2-\left(3b\right)^2$
2

The power of a product is equal to the product of it's factors raised to the same power

$a^2-9b^2$

Answer

$a^2-9b^2$

Problem Analysis

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

Main topic:

Special products

Related formulas:

4. See formulas

Time to solve it:

~ 0.82 seconds