Add 12 a2
– 8 ab – 6 and 3 a2 + 4 ab – 9
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Answer:
(12a²-8ab-6) +( 3a²+4ab-9)
=12a²-8ab-6+3a²+4ab-9
=12a²+3a²-8ab+4ab-6-9
=15a²-4ab-15
Hope it helps you!!
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