Algebra 2--Imaginary/Complex Numbers

Quadratics

100

x²-4x+5=0

What is 2-i, 2+i

200

m²+25=-8m

What is -4+3i, -4-3i

300

x²=4x-10

What is 2+i(sqrt6), 2-i(sqrt6)

400

2x²=-3(2x+3)

What is (-3/2)+(3/2)i

(-3/2)-(3/2)i

500

x²-5x+10=0

What is (5+i(sqrt(15)))/2, (5-i(sqrt(15)))/2

Simplifying Radicals

100

sqrt(-49) + sqrt(-64)

What is 15i

200

sqrt(-4)*sqrt(-9)

What is 6

300

sqrt(-8)+ 2sqrt(-18)

What is 8i sqrt(2)

400

sqrt(-12)* i sqrt(-18)

What is -18i

500

sqrt(-32)

4i sqrt(2)

Add/Subtract Complex Numbers

100

(2+3i) + (4+7i)

What is 6+10i

200

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

What is 9 + 4i

300

(6+5i)- (3+2i)

What is 3+3i

400

(2-7i) - (1-4i)

What is 1-3i

500

(8+5i)-(1-7i)

What is 7+12i

Multiplying

100

(3+2i)(5-i)

What is 17+7i

200

(6+2i)(6-2i)

What is 40

300

(2+3i)(4+7i)

What is -13+26i

400

(7+i)(7-i)

What is 48

500

-8i(-5-4i)-8i*5i

What is 8+40i

Random

100

i²³⁵

What is -i

200

Using the discriminant, will f(x)=2x² - 4x + 7 cross the x-axis?

What is no.

300

3i⁴² - 4i¹⁰³ + i⁶⁷

What is -3+3i

400

sqrt(-60) + sqrt(-540)

What is 8i sqrt(15)

500

sqrt(-45) i³²³ - sqrt(-245) i⁸⁷

What is -4 sqrt(5)