Completing The Square Answers
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1
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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
42
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Solve for in the equation .
A
x = –12 or x = 2B
x = –11 or x = 1C
x = –2 or x = 12D
x = –1 or x = 113
Use completing the square to solve for in the equation .
A
x = –4 or 6B
x = –2 or 14C
x = 1 plus-or-minus StartRoot 89 EndRoot
D
x = 1 plus-or-minus StartRoot 87 EndRoot
4
Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?
A
6B
36C
72D
1445
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
6
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
7
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
8
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
9
Brian is solving the equation . What value must be added to both sides of the equation to make the left side a perfect-square trinomial?
A
StartFraction 9 Over 64 EndFraction
B
StartFraction 9 Over 16 EndFraction
C
Three-fourths
D
Nine-fourths
10
What are the solutions of ?
A
or
B
or
C
or
D
or
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