Solving Quadratic Equations

Factoring

100

Use the Zero Product Property to solve the following quadratic equation. (x - 7)(x + 2) = 0

x = 7 x = -2

200

Solve the following quadratic equation by factoring. x²+3x+2 = 0

x = -2 x = -1

300

Solve the following quadratic equation by factoring. x² - 6x + 5 = 0

x = 5 x = 1

400

Solve the following quadratic equation by factoring. x² - 6x - 27 = 0

x = 9 x = -3

500

Solve the following quadratic equation by factoring. 2x² - 5x - 3 = 0

x = -1/2 x = 3

Solve by Square Roots

100

Solve the following quadratic equation by using square roots: x² = 4

x = 2 x = -2

200

Solve the following quadratic equation by using square roots: x² = 121

+11 or -11

300

Solve the following quadratic equation by using square roots: 4x² = 400

x = 10 x = -10

400

Solve the following quadratic equation by using square roots: x² -9 = -8

1 or -1

500

Solve the following quadratic equation by using square roots: 5x² + 3 = 128

x = 5 x = -5

Simplifying Square Roots

100

square root of 48

4 root 3

200

square root of -144

12i

300

square root of -24

2i root 6

400

2 times square root of -16

8i

500

6 times square root of -63

18i square root of 7

Adding and subtracting i

100

(9-i)+(-6+7i)

3+6i

200

(3+7i)-(8-2i)

-5+9i

300

5+(-9+3i)+6i

-4+9i

400

-4-(1+i)-(5+9i)

-10-10i

500

8i-(6-3i)+(4-4i)

-2+7i

Multiplying with i

100

What is i²

-1

200

(-3i)(10i)

30

300

i(8-i) be sure to put your answer in standard form (a+bi)

1+8i

400

(2-4i)(2+4i)

20

500

(3+i)(5-i)

16+2i