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reedmarcel66 reedmarcel66
  • 08-02-2017
  • Mathematics
Answered

Amir evaluated 5x - (x + 3)2 for x = 2, as shown. Describe Amir's mistake and find the correct answer.

5(2) - (2 + 3)2 = 10 + (-5)2

= 10 + 25

= 35

Verified Answer :

kasandrahnolan
kasandrahnolan kasandrahnolan
  • 02-11-2017

he never followed the order of operations

Answer Link
lulbabymimi lulbabymimi
  • 28-08-2018

By the order of operations, Amir should have squared 5 and then subtracted rather than distributing the negative and squaring.


5(2) - (2 + 3)2 = 10 - (5)2 = 10 - 25 = -15

Answer Link

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