+0  
 
0
121
1
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Check all that apply

x^2<81

A. 6

B. 9

C. 10

D. -4

E. -9

F. -12

 Mar 23, 2022
 #1
avatar+23198 
0

Starting with the number at A, square the number, if the answer is less than 81, check that answer.

Work your way down the list.

Remember that, if you square a negative number, the answer is positive.

 Mar 23, 2022

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