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Multiply Conjugates Using the Product of Conjugates Pattern
In the following exercises, multiply each pair of conjugates using the Product of Conjugates Pattern
339. (xy − 9)(xy + 9)

Respuesta :

Answer:

The product is the difference of squares is [tex]$\left(xy-9\right)\left(xy+9\right)={{x}^2}{{y}^2}-81$[/tex]

Step-by-step explanation:

Explanation

  • The given expression is (x y-9)(x y+9).
  • We have to multiply the given expression.
  • Square the first term xy. Square the last term 9 .

[tex]$\begin{aligned}&(x y-9)(x y+9)=(x y)^{2}-(9)^{2} \\&(x y-9)(x y+9)=x^{2} y^{2}-81\end{aligned}$[/tex]

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