(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
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(5x+2y)(5x-2y)-(3x+2y)(3x-2y)(5x+2y)(5x-2y)-(3x+2y)(3x-2y)(5x+2y)(5x-2y)-(3x+2y)(3x-2y)(5x+2y)(5x-2y
(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
=25x²-4y²-9x²+4y²
=16x²
(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
=(25x²-4y²)-(9x²-4y²)
=25x²-4y²-9x²+4y²
=16x²
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(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
=(25x²-4y²)-(9x²-4y²)
=25x²-4y²-9x²+4y²
=16x²
很高兴为您解答，祝你学习进步！【the1900】团队为您答题。
有不明白的可以追问！如果您认可我的回答。
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(5x+2y)(5x-2y)-(3x+2y)(3x-2y)
=25x^2-4y^2-9x^2+4y^2
=16x^2
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