Radical Equations and Extraneous Roots Answers
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1
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Which of the following is an extraneous solution of ?
A
x = –8B
x = –2C
x = 2D
x = 82
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Which of the following is an extraneous solution of ?
A
x = –6B
x = –1C
x = 1D
x = 63
What is the solution of ?
A
x = 6B
x = 72C
x = 126D
no solution4
Determine the solution for the following equation:
A
x = 3B
x = 5C
x = 13D
x = 655
Which equation is equivalent to ?
A
x + 9 = x + 10B
x + 9 = x2 + 20x + 100C
x2 + 81 = x2 + 100D
x2 + 81 = x2 + 20x + 1006
What is the solution of ?
A
x = –8 or x = –1B
x = –8C
x = –1D
no solution7
Which equation can be rewritten as x + 4 = x2? Assume
A
StartRoot x EndRoot + 2 = x
B
StartRoot x + 2 EndRoot = x
C
StartRoot x + 4 EndRoot = x
D
StartRoot x squared + 16 EndRoot = x
8
Which of the following is an extraneous solution of ?
A
x = –12B
x = –3C
x = 3D
x = 129
Which of the following is a radical equation?
A
x + StartRoot 5 EndRoot = 12
B
x squared = 16
C
3 + x StartRoot 7 EndRoot = 13
D
7 StartRoot x EndRoot = 14
10
Which equation is related to ?
A
x + 10 = x2 + x + 1B
x + 10 = x2 + 2x + 1C
x + 10 = x2 + 1D
x + 10 = x2 – 111
What is the solution of ?
A
x = 2B
x = 3C
x = 2 or x = 3D
no solution12
Which of the following is a radical equation?
A
x StartRoot 3 EndRoot = 13
B
x + StartRoot 3 EndRoot = 13
C
StartRoot x EndRoot + 3 = 13
D
x + 3 = StartRoot 13 EndRoot
13
Which equation is equivalent to ?
A
x + 11 = 225B
x + 121 = 225C
StartRoot x EndRoot = 15 + 11
D
StartRoot x EndRoot = 15 minus 11
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