Mathematics · Algebraic Expressions
The expression (3x + 5y)(5x - 7y) - (3x - 5y)(5x - 7y) is equal to:
- 110(x2 + y2)
- 210y(5x + 7y)
- 310x(x + 5y)
- 410y(5x - 7y)✓
Correct answer
10y(5x - 7y)
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