ACT Math Practice Question
Which of the following expressions is equivalent to $(x^2 - y^2) - (6x^2 + 4xy - y^2)$?
- A.$-5x^2 - 4xy$
- B.$-5x^2 + 4xy - 2y^2$
- C.$7x^2 + 4xy - 2y^2$
- D.$7x^2 + 4xy + 2y^2$
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