Download Roots and Radicals Key

Roots and Radicals
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Key
81
16
12
23
3
125  5
 4 16  2
5
1
 8 3
 2
1
2
6
 36 
  
7
 49 
1
1 2
1
10.     
8
 64 
81 9

11.
64 8
12.
100 10

121 11
13. Nope. If x is less than -1, then x  1 will simplify to have a
negative under the radical and will not be real.
14. Any real number squared is positive. If you add 1, it is still positive,
which means the square root will be real.
15. The cube root of any real number is real. Cube roots of positive
numbers are positive. Cube roots of negative numbers are
negative. The cube root of zero is zero.
Pre-Algebranomicon (;,;)