Solving Using the Quadratic Formula Worksheet
Answers
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1

x^{2} + -7x + 10 = 0

Answer
x = 2, 5

2

x^{2} + -14x + 45 = 0

Answer
x = 5, 9

3

0.25x^{2} + -0.25x + -10.5 = 0

Answer
x = -6, 7

4

0.3y^{2} + 0.15y + -11.7 = 0

Answer
y = -6.5, 6

5

10k^{2} + 200k + 937.5 = 0

Answer
k = -12.5, -7.5

6

x^2 - 11x + 30.25

Answer
x = 5.5

7

4x^{2} + 8x + -77 = 0

Answer
x = -5.5, 3.5

8

16y^{2} + -8y + -3 = 0

Answer
y = -0.25, 0.75

9

x^{2} + -1.375x + 0.375 = 0

Answer
x = 1, 0.375

10

z^{2} + 0.6z + -20.16 = 0

Answer
z = -4.8, 4.2

11

x^{2} = 15 + 2x

Answer
x = -3, 5

12

k^{2} + -10k + 35 = 7k + -35

Answer
k = 7, 10

13

2x^{2} + 5 + 20x = 20 + -8x^{2} + x

Answer
x = -2.5, 0.6

14

3 = 16p + -20p^{2}

Answer
p = 0.3, 0.5

15

8y = 0.5y^{2} + 31.5

Answer
y = 7, 9

16

2m + m^{2} + 2.5m + -2.5 = 0

Answer
m = -5, 0.5

17

n^{2} + 7n + n^{2} + -10 = 5

Answer
n = -5, 1.5

18

x^{2} = 7.84

Answer
x = -2.8, 2.8

19

x^{2} + -3x = 0

Answer
x = 0, 3

20

q^{2} + -7.5q + 25 = -1q^{2} + -7.5q

Answer
q = 2.5, 5