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Find the sum. (2a2 + ab + 2b) + (4a2 − 3ab + 9)
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Find the sum. (2a2 + ab + 2b) + (4a2 − 3ab + 9)

User Vladimir Dimov
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(2a^2 + ab + 2b) + (4a^2 − 3ab + 9)
= 6a^2 -2ab + 2b + 9
User Krikara
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