quiz: 1.4 & 1.5

imaginary #'s

100

 i^2 

what is -1

200

the square root of -1

i

300

square root of -64

what is 8i

400

square root of -83

-83i

500

square root of 121

11

+ and -

100

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

11 + 5i

200

(8+2i) - (6+7i)

2-5i

300

(10+2i) + (1+2i)

11+4i

400

(6+3i) - (2+9i)

4-6i

500

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

-1 - 3i

factoring

100

x^2-1

(x+1)(x-1)

200

4x^2-25

(2x+5)(2x-5)

300

5x^2-45y^2

5(x+3y)(x-3y)

400

x^2+8x+16

(x+4)

500

25x^2+60a+36

(5x+6)^2

multiplication

100

(3+7i) (9+5i)

-8+78i

200

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

-6+17i

300

(3x−2)(x+7)

3x^2+19x−14

400

−7i(7i−3)

49+21i

500

(8-3i)(-4-7i)

-53-44i

division

100

1/6+square root of 7

6-square root of 7/29

200

4/2-i

8/5+4/5i

300

7i/2-4i

-7/5+7/10i

400

3+i/6+i

19/37+3i/37

500

-20+square root of -75/40

-1/2+1i squareroot of three/8