Vocabulary
How many terms are in a trinomial?
Three
(x+5)+(3x+9)
4x + 14
(7x+4)-(5x+8)
2x-4
(3x+1)(2x+3)
6x2+11x+3
Simplify: (3x2)(-2x3)
-6x5
What is the DEGREE of 2x4+9x3-5x2+6
4
(3x2+4x)+(2x2-3x)
5x2+x
(6x2+4)-(3x2+5)
3x2-1
(2x-5)(3x+2)
6x2-11x-10
Simplify: x3+3x-4+8-3x3-2x
-2x3+x+4
What is a coefficient?
Number in front of a variable (letter)
(-4x2+2x-3)+(5x2-4x+8)
x2-2x+5
(2x-4)-2(4x-2)
-6x
Simplify: 3x5-2x2+5x-7
3x5-2x2+5x-7
Whatever comes after the word from goes??
First!
(8x2-4x+3)+(7x2+2x-11)
15x2-2x-8
(6x2-5x+8)-(4x2-7x+9)
2x2+2x-1
Simplify: (-8x3)(4x7)
-32x10
Like terms need to have...(two things!!)
1. Same variables 2. Same exponents
(5x3+4x2-2x+2)+(2x2+x+5)
5x3+6x2-x+7
(6x3+4x2-4x+5)-2(2x3-3x2+5x-5)
2x3+10x2-14x+15
Ms. Waters wants to know how many desks can fit in her classroom next year. The length of her classroom is x+5 ft and the width of her classroom is x-4 ft. What is the area of her classroom? Area = lw
x2+x-20 square ft
Simplify: 9x * 3x
27x2