(9y+5x) (9y-5x) Simplify your answer.

Mathematics

1 answer:

Alex777 [14]3 years ago

6 0

Answer:

$81 {y}^{2} - 25 {x}^{2}$

Step-by-step explanation:

$(9y+5x) (9y-5x) \\ \\ = {(9y)}^{2} - {(5x)}^{2} \\ \\ = 81 {y}^{2} - 25 {x}^{2}$

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