Answer the question.Which one of the following is the correct method for evaluating the expression 

A. 3 ? 72 - 5 = (21 - 5)2 = 16 = 256
B. 3 ? 72 - 5 = 3 ? 49 - 5 = 147 - 5 = 142
C. 3 ? 72 - 5 = 3 ? 22 = 3 ? 4 = 12
D. 3 ? 72 - 5 = 212 - 5 = 441 - 5 = 436


Answer: B

Mathematics

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