Radical Equations and Extraneous Roots — Unit test Answers
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1
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Which function has a domain of and a range of ?
A
y = StartRoot x minus 5 EndRoot + 3
B
y = StartRoot x + 5 EndRoot minus 3
C
y = negative StartRoot x minus 5 EndRoot + 3
D
y = negative StartRoot x + 5 EndRoot minus 3
2
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What values of c and d make the equation true? Assume and
A
c = 1, d = 3B
c = 1, d = 9C
c = 2, d = 8D
c = 2, d = 93
Which of the following is the graph of ?
A
On a coordinate plane, an absolute value curve curves up and to the right in quadrant 4 and starts at y = negative 1.
B
On a coordinate plane, an absolute value curve curves up and to the right in quadrant 4 and starts at y = 1.
C
On a coordinate plane, an absolute value curve opens down and to the left in quadrant 2 and starts at y = 1.
D
On a coordinate plane, an absolute value curve opens down and to the left in quadrant 2 and starts at y = negative 1.
6
What is the following simplified product? Assume
A
3 x StartRoot 6 x EndRoot + x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared + 8 x Superscript 5 Baseline StartRoot 10 x EndRoot
B
3 x StartRoot 6 x EndRoot + x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 EndRoot + 8 x Superscript 5 Baseline StartRoot 10 EndRoot
C
3 x StartRoot 6 x EndRoot minus x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 EndRoot minus 8 x Superscript 5 Baseline StartRoot 10 EndRoot
D
3 x StartRoot 6 x EndRoot minus x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 x EndRoot minus 8 x Superscript 5 Baseline StartRoot 10 x EndRoot
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