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Solving Using the Quadratic Formula Worksheet

Instructions

Solve each equation using the quadratic equation. Enter each answer in the corresponding box. Use commas to separate multiple answers.

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 =
1
x2 + -7x + 10 = 0
x =
2
x2 + -14x + 45 = 0
x =
3
0.25x2 + -0.25x + -10.5 = 0
x =
4
0.3y2 + 0.15y + -11.7 = 0
y =
5
10k2 + 200k + 937.5 = 0
k =
6
x^2 - 11x + 30.25
x =
7
4x2 + 8x + -77 = 0
x =
8
16y2 + -8y + -3 = 0
y =
9
x2 + -1.375x + 0.375 = 0
x =
10
z2 + 0.6z + -20.16 = 0
z =
11
x2 = 15 + 2x
x =
12
k2 + -10k + 35 = 7k + -35
k =
13
2x2 + 5 + 20x = 20 + -8x2 + x
x =
14
3 = 16p + -20p2
p =
15
8y = 0.5y2 + 31.5
y =
16
2m + m2 + 2.5m + -2.5 = 0
m =
17
n2 + 7n + n2 + -10 = 5
n =
18
x2 = 7.84
x =
19
x2 + -3x = 0
x =
20
q2 + -7.5q + 25 = -1q2 + -7.5q
q =
   
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