Radical Equations and Extraneous Roots Answers
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1
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What is the solution of ?
A
x = –72B
x = –66C
x = 58D
no solution2
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The formula that relates the length of a ladder, L, that leans against a wall with distance d from the base of the wall and the height h that the ladder reaches up the wall is . What height on the wall will a 15-foot ladder reach if it is placed 3.5 feet from the base of a wall?
A
11.5 feetB
13.1 feetC
14.6 feetD
15.4 feet3
What is the solution of ?
A
x = twelve-fifths
B
x = negative twelve-fifths
C
x = –6 or x = –3D
no solution4
Which of the following is an extraneous solution of ?
A
x = –12B
x = –3C
x = 3D
x = 125
Which equation is related to ?
A
x + 10 = x2 + x + 1B
x + 10 = x2 + 2x + 1C
x + 10 = x2 + 1D
x + 10 = x2 – 16
What is the solution of ?
A
x = –8 or x = –1B
x = –8C
x = –1D
no solution7
What is the solution of ?
A
x = 6B
x = 72C
x = 126D
no solution8
Which of the following is an extraneous solution of ?
A
x = –6B
x = –1C
x = 1D
x = 69
Which equation is equivalent to ?
A
x + 11 = 225B
x + 121 = 225C
StartRoot x EndRoot = 15 + 11
D
StartRoot x EndRoot = 15 minus 11
10
Which equation is equivalent to ?
A
x + 9 = x + 10B
x + 9 = x2 + 20x + 100C
x2 + 81 = x2 + 100D
x2 + 81 = x2 + 20x + 100Did you find these answers helpful?
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