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ACT Math Practice Question

Which of the following expressions is equivalent to $(y + 7)^3$?

  1. A.$y^3 + 21y^2 + 147y + 343$
  2. B.$y^3 + 14y + 343$
  3. C.$y^3 + 14y + 49$
  4. D.$y^3 + 343$

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