GMAT 考满分题库

Magoosh - 数学DS - 132
What is the value of $$9x^2$$ – 30xy +$$ 25y^2$$ ?

Statement #1: 3x – 5y = 20

Statement #2: x + y = 12
  • AStatement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
  • BStatement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
  • CBOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
  • DEach statement ALONE is sufficient to answer the question.
  • EStatement 1 and 2 TOGETHER are NOT sufficient to answer the question.
显示答案
正确答案: A

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