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20 February, 02:46

Sam evaluated the expression x2y for x = 7 and y = 9. He got a value of 49. Which of the following statements is correct?

Sam's answer is correct.

Sam forgot to multiply.

Sam squared wrong.

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Answers (1)
  1. 20 February, 04:27
    0
    Sam forgot to multiply

    he added x and 2, which is actually 7 and 2, and multiplied that by 9

    however, he was supposed to multiply 7 and 2 and 9 all together
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