Help!!!!!!!!!!!!!!!!!!?????
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- first by using (a2+b2) formula
- 6(4a2+2(2a)(3b) +9b2)-8(4a2+2(2a)(3b) +9b2)
- 24a2+72ab+54b2-32a2-96ab-72b2
- ans is -8a2-24ab-18b2
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