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25a² - 16b² when a = --2 and b = 3
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25a² - 16b² when a = --2 and b = 3

User Varun Mahajan
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25a² - 16b²

25*-2² - 16*3²

25*4 - 16*9

100 - 144

= -44

User Zollie
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