Solving Polynomial Equations using Technology — Unit test Answers
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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
2
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What is the solution of ?
A
x = 2B
x = 3C
x = 2 or x = 3D
no solution3
Which of the following is an extraneous solution of ?
A
x = –6B
x = –1C
x = 1D
x = 64
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 feet5
Which equation is equivalent to ?
A
x + 9 = x + 10B
x + 9 = x2 + 20x + 100C
x2 + 81 = x2 + 100D
x2 + 81 = x2 + 20x + 1006
Which of the following is an extraneous solution of ?
A
x = –12B
x = –3C
x = 3D
x = 127
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
Determine the solution for the following equation:
A
x = 3B
x = 5C
x = 13D
x = 659
What is the solution of ?
A
x = –8 or x = –1B
x = –8C
x = –1D
no solution10
Which of the following is an extraneous solution of ?
A
x = –8B
x = –2C
x = 2D
x = 8Did you find these answers helpful?
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