Mathematics · Algebra
The expression (x + y)(2x - 3y + z) - (2x - 3y)z is equal to:
- 12x2 + xy - 3y2 + 4yz + zx
- 22x2 - xy - 3y2 - 4yz + zx
- 32x2 - xy + 3y2 + 4zx - yz
- 42x2 - xy - 3y2 + yz + zx✓
Correct answer
2x2 - xy - 3y2 + yz + zx
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