Mathematics · Algebra
If a + b = 2c, then which of the following expressions is true?
- 1a 2 - ac = b 2 - bc
- 2a 2 + 2bc = b 2 + 2ac✓
- 3a 2 - 2bc = b 2 - 2ac
- 4a 2 + 2ac = b 2 + 2bc
Correct answer
a 2 + 2bc = b 2 + 2ac
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