alleryWhich formula represents the square of the sum (a + b)?
Aa^2 + ab + b^2
Ba^2 - 2ab + b^2
Ca^2 + 4ab + b^2
Da^2 + 2ab + b^2
Answer & Solution
Correct answer: D. a^2 + 2ab + b^2
The square of a binomial sum expands to a^2 + 2ab + b^2 by the binomial theorem.
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