Add/Subtract Complex Numbers
Multiply Complex Numbers
Quadratic Formula or Solve for x
Simplify Radicals with Complex Numbers
Random Questions
100

8i + 4 - (3i + 10)

-6 + 5i

100

6i(12-4i)

72+24i

100

#7. x2=-90

x= +/- 3 radical 10 i

100

#1. Radical -32

+/- 4 radical 2 i

100

DOUBLE JEOPARDY

What is i38? Explain. 

-1 b/c  i38 is equal to (i4)9 x i


200

#3. 3 + 5i + 4 + 2i - (6 - 7i)

1 + 14i

200

#5. 4i(11-9i)

36+44i

200

DOUBLE JEOPARDY

 2x2-6x+5=0

x=3/2 +/- 1/2i

200

Radical -80

+/- 4 radical 5 i

200

Rewrite into standard notation.

x2+3x=12

x2+3x-12

Remember that standard notation is ax2+bx+c

300

-18 - 3i + 11 + 5i

-7 + 2i

300

(2+4i)(3+3i)

-6+18i

300

#8. x2+9=-15

x=+/-2 radical 6 i

300

#2. Radical -144

+/- 12i

300

This person created a way to multiply binomials that wasn't a huge hit in class. 

Who is Pascal? 

400

-8i - (8 - 5i) + 6i

-8 + 3i

400

#6. (12+3i)(5-2i)

66-9i

400

#11. -x2+4x-5=0

x=2 +/- i
400

Radical -72

+/- 6 radical 2 i

400

A number that is a real part and an imaginary part 

What is a Complex Number

500

#4. -i - (2 + 3i) + 2 + i

-3i

500

(3+2i)2

5+12i

500

#9. -6x2 + 17 = 125

x= +/- 3 radical 2 i

500

Radical -225

+/- 15i

500

b2 - 4ac 

What is the discriminant?