Solving Quadratic Equations Using the Quadratic Formula: Analyzing 15 Examples, Summaries of Algebra

The solutions to 20 quadratic equations using the quadratic formula. Students can study this document to understand the process of solving quadratic equations and verify their own solutions. Each example includes the quadratic equation and its corresponding solutions.

Typology: Summaries

2021/2022

Uploaded on 08/01/2022

hal_s95
hal_s95 🇵🇭

4.4

(655)

10K documents

1 / 2

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Elementary Algebra Skill
Solving Quadratic Equations Using the Quadratic Formula
Solve each equation with the quadratic formula.
1)
3
n
2
− 5
n
− 8 = 0 2)
x
2
+ 10
x
+ 21 = 0
3)
10
x
2
− 9
x
+ 6 = 0 4)
p
2
− 9 = 0
5)
6
x
2
− 12
x
+ 1 = 0 6)
6
n
2
− 11 = 0
7)
2
n
2
+ 5
n
− 9 = 0 8)
3
x
2
− 6
x
− 23 = 0
9)
6
k
2
+ 12
k
− 15 = −10 10)
8
x
2
− 14 = −11
11)
6
k
2
+ 2
k
+ 9 = −3 12)
12
p
2
+ 9
p
− 30 = −10
13) 3
x
2
=
−7
x
+ 136 14) 3
n
2
=
n
+ 14
15)
6
v
2
+ 3 = −2
v
16)
9
p
2
− 7 = 9
p
17)
11
k
2
+ 4
k
− 52 =
10
k
2
− 7 18)
−4
a
2
+ 18
a
− 15 =
−7
a
2
+ 9
a
19)
−4
n
(
n
− 2
)
=
6
(
n
+ 3
)
− 11
n
2
20)
x
(
x
− 3
)
=
−7 − 10
x
pf2

Partial preview of the text

Download Solving Quadratic Equations Using the Quadratic Formula: Analyzing 15 Examples and more Summaries Algebra in PDF only on Docsity!

Elementary Algebra Skill

Solving Quadratic Equations Using the Quadratic Formula

Solve each equation with the quadratic formula.

  1. 3 n^2 − 5 n − 8 = 0 2) x^2 + 10 x + 21 = 0

  2. 10 x^2 − 9 x + 6 = 0 4) p^2 − 9 = 0

  3. 6 x^2 − 12 x + 1 = 0 6) 6 n^2 − 11 = 0

  4. 2 n^2 + 5 n − 9 = 0 8) 3 x^2 − 6 x − 23 = 0

  5. 6 k^2 + 12 k − 15 = −10 10) 8 x^2 − 14 = −

  6. 6 k^2 + 2 k + 9 = −3 12) 12 p^2 + 9 p − 30 = −

  7. 3 x^2 = −7 x + 136 14) 3 n^2 = − n + 14

  8. 6 v^2 + 3 = −2 v 16) 9 p^2 − 7 = 9 p

  9. 11 k^2 + 4 k − 52 = 10 k^2 − 7 18) −4 a^2 + 18 a − 15 = −7 a^2 + 9 a

19) −4 n ( n − 2)^ = 6 ( n + 3)^ − 11 n^2 20) x ( x − 3)^ = −7 − 10 x

Answers to Solving Quadratic Equations Using the Quadratic Formula

2) {−3, −7} 3) No solution.^ 4) { 3 , −3}

5) {6 +^30

, 6 −^30

6 }^

6 }^

7) {−5 +^97

, −5 −^97

8) {3 +^78

, 3 −^78

3 }^

9) {−6 +^66

, −6 −^66

6 }^

  1. No solution.

12) {−9 +^1041

, −9 −^1041

24 }^

3 }^

  1. No solution.

16) {3 +^37

, 3 −^37

18) {−3 +^29

, −3 −^29

2 }^

19) {−1 +^127

, −1 −^127

20) {−7 +^21

, −7 −^21