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Solve By Completing the Square

Instructions

Solve each equation by Completing the Square. Enter multiple solutions using commas. When necessary, use decimal numbers instead of fractions.

Checking Your Answers

Enter an answer in each box, then click the "Check Worksheet" button at the bottom of the page to automatically check each answer.  You may also check your answers manually by referring to the Answer Sheet.

 If you need assistance with a particular problem, click the " step-by-step" link for an in depth solution.

S1
x2 + x + -3.75 = 0
x =
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1
x2 + 5x + 6 = 0
x =
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2
x2 + 2x + 1 = 0
x =
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3
x2 + 3x + -10 = 0
x =
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4
m2 + -4m + -21 = 0
m =
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5
3k2 + 18k + 15 = 0
k =
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6
2n2 + -22n + 60 = 0
n =
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7
4y2 + 8y + -21 = 0
y =
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8
8y2 + 10y + -3 = 0
y =
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9
50k2 + -20k + -6 = 0
k =
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10
100x2 + -100x + 9 = 0
x =
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11
10t2 = t + 2
t =
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12
18m2 + 6m + 6 = 6m2 + 30m + -3
m =
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13
p2 + -0.75p + 0.125 = 0
p =
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14
2x2 = x2 + 1.75 + -3x
x =
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15
x2 = 0.6x + -0.08
x =
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16
3y2 + -2.55y + -1.0 = 0.5
y =
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17
j2 + -3.5j + 1.5 = 0
j =
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18
c2 + 3.75c + -1 = 0
c =
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19
w2 + 10.1w + 1 = 0
w =
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20
x2 + -11.5x + -6 = 0
x =
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