7. Subtract: 7a2 - 3ab + 8b2 from 5ab
-2a2 -3b2 *
O (a) 2ab +5a2 +5b2
O (b) 8ab + 9a2 + 11b2
(c) 8ab - 9a2 - 11b2
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Answer:
option C
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