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Hitman42 [59]
3 years ago
7

(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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The cost for Andrea to produce several units of a certain item is $336 plus $12 per unit. She sells this item for $28 per unit.
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