SOLUTION: Two of your friends, Matt and Karen, both run to you to settle a dispute. They were working on a math problem, and got different answers. Wisely, you decide to look at their work t

Question 883522: Two of your friends, Matt and Karen, both run to you to settle a dispute. They were working on a math problem, and got different answers. Wisely, you decide to look at their work to see if you can spot the source of confusion.
Matt
6 � 4(3 � 5)2 + 30 � 5
6 � 4(�2)2 + 30 � 5
6 � 4(4) + 30 � 5
6 � 16 + 30 � 5
−10 + 30 � 5
20 � 5
4
Karen
6 � 4(3 � 5)2 + 30 � 5
6 � 4(�2)2 + 30 � 5
6 � 4(−4) + 30 � 5
6 + 16 + 30 � 5
6 + 16 + 6
22 + 6

Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Matt made a mistake:
6 � 4(3 � 5)2 + 30 � 5
6 � 4(�2)2 + 30 � 5
6 � 4(4) + 30 � 5 ---------------Right here. .
6 � 16 + 30 � 5
−10 + 30 � 5
20 � 5
4

Karen's work and result are correct.
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