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9.1 Square roots
Hauen laguntzarekin: Sarenich
Evaluate the expression, rounding to the nearest
 hundredth when necessary.
±√.81
±9
-.9
.9
±.9
Evaluate the expression, rounding to the nearest
 hundredth when necessary.
√-25
±5
0
no square roots
-5
Evaluate the expression, rounding to the nearest
hundredth when necessary.
 -5
  0
-0.15
-0.55
-√.3
Evaluate the expression, rounding to the nearest
hundredth when necessary.
±√1.25
1.11
±1.12
±1.11
1.2
Evaluate √b2 - 4ac when a = 2, b= -3 and c = 4
4.8
undefined
-4.8
5.3
Evaluate √b2 - 4ac when a = 2, b= -2 and c = -2
4.47
-3.46
3.16
undefined
Evaluate √b2 - 4ac when a = 5, b= -6 and c = -3
9.4
8.8
9.0
9.8
Evaluate √b2 - 4ac when a = -1, b= -5 and c = -8
-2.6
2.6
Undefined
7.5
Which of the following is an example of a
perfect square?
782
576
688
482
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