Mathematics · Algebra
The expression (x - y)(x2 + xy + y2) + (x + y)(x2 - xy + y2) - (x + y)(x2 - y2) is equal to:
- 1x3 + y3 + xy(x - y)
- 2x3 + y3 + xy(y - x)✓
- 3y3 - x3 + xy(y + x)
- 4x3 - y3 + xy(x + y)
Correct answer
x3 + y3 + xy(y - x)
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