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Australian AMC 2013 - Intermediate Question 13

AMC AUSTRALIA · Australian AMC 2013 - Intermediate

Question 13

If $x^2=x+3$, then $x^3$ equals
  1. $x+6$
  2. $2x+6$
  3. $3x+9$
  4. $4x+3$
  5. $27x+9$