Completing The Square Answers
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1
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Solve for in the equation .
A
x = 5 plus-or-minus 2 StartRoot 5 EndRoot
B
x = 5 plus-or-minus StartRoot 35 EndRoot
C
x = 10 plus-or-minus 2 StartRoot 5 EndRoot
D
x = 10 plus-or-minus StartRoot 35 EndRoot
2
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What are the solutions of ?
A
or
B
or
C
or
D
or
4
Solve for in the equation .
A
x = negative 7 plus-or-minus 4 StartRoot 6 EndRoot i
B
x = –7 ± 8iC
x = 7 plus-or-minus 4 StartRoot 6 EndRoot i
D
x = 7 ± 8i5
Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?
A
6B
36C
72D
1446
Which value must be added to the expression x2 + x to make it a perfect-square trinomial?
A
One-fourth
B
One-half
C
1D
47
Solve for in the equation .
A
x = negative 6 plus-or-minus StartRoot 82 EndRoot
B
x = negative 6 plus-or-minus 2 StartRoot 17 EndRoot
C
x = 1 plus-or-minus StartRoot 33 EndRoot
D
x = 1 plus-or-minus StartRoot 47 EndRoot
8
Solve for in the equation .
A
x = negative 12 plus-or-minus StartRoot 85 EndRoot
B
x = negative 6 plus-or-minus StartRoot 23 EndRoot i
C
x = 6 plus-or-minus StartRoot 23 EndRoot i
D
x = 12 plus-or-minus StartRoot 85 EndRoot
9
Solve for in the equation .
A
x = –16 or x = –4B
x = –10C
x = –8D
x = 4 or x = 1610
Solve for in the equation .
A
x = –6 or x = 2B
x = negative 2 plus-or-minus 2 StartRoot 2 EndRoot
C
x = –2 or x = 6D
x = 2 plus-or-minus 2 StartRoot 2 EndRoot
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