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OpenStudy (anonymous):
the correct simplification of (3a^2 + 8a - 4) + (5a^2 - 4).
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OpenStudy (anonymous):
3a^2 + 8a - 4 + 5a^2 - 4 8a^2 + 8a - 16
OpenStudy (anonymous):
3a^2 + 8a - 4 + 5a^2 - 4 8a^2 + 8a - 8
OpenStudy (anonymous):
*-8
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