Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 20 Page 69

a^2=a* a

81

Practice makes perfect

The expression 9^2, or "9 squared," means that we need to multiply 9 by itself. 9^2=9* 9 To simplify this using a calculator, we can either type 9^2 or 9* 9. Both expressions give us the same answer.