alleryStart learning →Combine a binomial square and a conjugate product: (a+b)²−2ab−(a−b)(a+b).
A2ab
Ba²+b²
C2a²
D2b²
Answer & Solution
Correct answer: D. 2b²
The first two terms combine to a² + b²; subtracting a² − b² then leaves 2b².
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