Quadratics - Imaginary Numbers & Solve with Sq. Roots

Solve Using Square Roots A

100

Solve: x² = 16

4, -4

200

Solve: x² = - 100 ?

10i, -10i

300

Solve: 2x² + 3 = -47  ?

5i, -5i

400

Solve: x² = -27

3isqrt(3), -3isqrt(3)

500

Solve: 6x² + 1 = -5

-i, i 

Solve Using Square Roots B

100

Solve

(x + 3)² = 16

x = -7, 1

200

Solve

3 (x - 1)² = 12

x = -1, 3

300

Solve

(x - 4)² -3 = 9

x = 4 +- 2 sqrt 3

400

(x + 2)² + 8 = 7 

x = -2 +- i

500

Solve

-2 (x+1)² - 4 = 6

x = -1 +- i sqrt 5

Simplifying Radical

100

Simplify √64 

8

200

Simplify √-25 

5i

300

Simplify √-8 

2i√2

400

simplify √-40

2i√10

500

√-72 

6isqrt(2)

Complex Numbers A

100

What is the conjugate of (6-4i)

(6+4i)

200

Rationalize  8/2i

-4i

300

Simplify

(4-2i)/-2i

1+2i

400

What will you multiply by to rationalize

(1+3i)/(2-4i)

2+4i

500

Simplify

(1+2i)/(3-4i)

-1/5 + (2/5)i

Complex Numbers B

100

(2+4i) + (3-2i)= 

5+2i

200

(3+6i) + (1-2i)=

4+4i

300

(5+2i) - (-2+3i)=

7-i

400

(4+2i)(6-5i)=

34 - 8i

500

(4-5i)²=

-9 - 40i