Math Review

Matrices

100

2 -3    +     -1 -5

-4 2            3 -2

1 -8

-1 0

200

2 -3     -     -1 -5

-4 2            3 -2

 3 2

-7 4

300

A= -3 1          B= 4 -3

     -2 4               0 -2

      5 -1            -2  4

what is 3A-2B

-17 9

-6  16

19 -11

400

A= 1 2 -3        B= -2 6 4

    -5 4 2             -1 -2 3

What is 2A+5B

-8 34 14

-15 -2 19

500

3 -5 4  +  -1 4 2

-1 4 6       -5 -2 3

2 -1 6 

-6 2 9

Imaginary numbers

100

Simplify i^7

-i

200

True /false i^2 is real

True

300

Sqrt(-25)

5i

400

3(root)-64

-4

500

X^2=-49

+-7i

Exponents

100

25^1/2

5

200

(8)^5/3

32

300

(256)^3/4

64

400

(1024)^2/5

16

500

Sqrt(81/64)^3

729/512

Dividing/multiplying polynomials

100

8x^2+12x-3 / 4x

2x+3- 3/4x

200

12x^3+9x^2-3 / 3x

4x^2+3x- 1/x

300

(12x^2-18x)/(2x+3)

-6x

x cannot equal -(3/2)

400

(5x^3-10x-15) / -5x

-x^2+2+3/x

500

(4x^2-3x+5)*(x-4)

4x^5-19x^2+17x-20