CFA Review 1

Like Terms

100

Like terms need to have...(two things!!)

1. Same variables 

2. Same exponents

200

8a + 15a + a + 9

24a + 9

300

-5r + 3q - 8q - r

-6r -5q

400

-15j - 18k - 24j - 18k

-39j - 36k

500

-7d - (-40) + 8d

d + 40

Adding Polynomials

100

(x+5)+(3x+9)

4x + 14

200

(3x²+4x)+(2x²-3x)

5x²+x

300

(-4x²+2x-3)+(5x²-4x+8)

x²-2x+5

400

(8x²-4x+3)+(7x²+2x-11)

15x²-2x-8

500

(5x³+4x²-2x+2)+2(2x³-2x²+x+5)

9x³+12

Subtracting Polynomials

100

(6x²-5x+8)-(4x²-7x+9)

2x²+2x-1

200

(2x-4)-2(4x-2)

-6x

300

(7x+4)-(5x+8)

2x-4

400

(6x²+4)-(3x²+5)

3x²-1

500

(6x³+4x²-4x+5)-2(2x³-3x²+5x-5)

2x³+10x²-14x+15

Multiplying Polynomials

100

(3x+1)(2x+3)

6x²+12x+3

200

(2x-5)(3x+2)

6x²-4x-10

300

(2x-4)(3x²-6x+1)

6x³-24x²+26x-4

400

(2x²-4x+6)(x²+5x-2)

2x⁴+6x³-18x²+38x-12

500

Mr. Shah wants to know how many desks can fit in his classroom. The length of his classroom is x+5 ft and the width of her classroom is x-4 ft. What is the area of his classroom? Area = lw

x²+x-20

Miscellaneous

100

How many terms are in the expression?

4y⁵+6xy-3x²

Three

200

What is the DEGREE of 2x⁴+9x³-5x²+6

4

300

4(3x-y+5)

12x-4y+20

400

A NEGATIVE TIMES a NEGATIVE is a ...

A POSITIVE TIMES a NEGATIVE is a ...

Positive

Negative

500

A symbol, usually a letter of the alphabet, used to represent a quantity that can change

Variable