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Jillian simplified the expression 7+3⋅(10−6)2 in the following way:

7+3⋅(10−6)2
7+3⋅(4)2
7+3⋅16
10⋅16
160
Part A: Explain, using complete sentences, what Jillian's error was.



Part B: Show how the expression should have been simplified using a similar format.

1 answer

Assuming you meant:
7+3*(10−6)^2
Here are the proper steps, you decide where the error was in the original

= 7+3*(4)^2
= 7+3*16
= 7+48
= 55
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