Mathematics · Algebra
What is the expanded form of (4a + 6b + 9c)2?
- 116a2 + 36b2 + 81c2 + 52ab + 108bc + 72ac
- 216a2 + 36b2 + 81c2 + 48ab + 108bc + 82ac
- 316a2 + 36b2 + 81c2 + 48ab + 108bc + 72ac✓
- 416a2 + 36b2 + 81c2 + 48ab + 103bc + 72ac
Correct answer
16a2 + 36b2 + 81c2 + 48ab + 108bc + 72ac
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