Question

Find the product: (x+3y)×(x-3y)​

Answer 1

The answer is x^2-9y^2

Step by step explanation:

$its \: an \: identity \\ (a + b)\: (a - b) \: = (a^{2} - b^{2} ) \\ = {x }^{2} - {(3y)}^{2} \\ = {x}^{2} - 9 {y}^{2}$

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