simplify:
(15x – 4y) (15x + 4y + 3) - 45x + 12y
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Answer:
225x² - 16y²
Step-by-step explanation:
(15x – 4y) (15x + 4y + 3) - 45x + 12y = 225x² + 60xy - 60xy - 16y² + 45x - 12y -45x +12y = 225x² - 16y²
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Answer:
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