How many terms are in this expression?
2x - 3ab + b + x^2
4
2a(a-3b)
2a2-5ab
3x - 5a
x=4
a=2
2
(2x)(4y)
8xy
A equation is...
An expression that included an equals sign
What are the like terms?
ab3 - 9x + 5ab2 - 5x - 3y
9x and 5x
5x3(6y+x)
30xy3 + 5x3
3b - 3y
b=1
y=5
-12
(4x3)(2y)
8xy3
A coefficient is...
the number in front of a variable.
For example: in 3x-4y+8a, the coefficients are the 3, 4, and 8
What are the constent terms?
3x + 5 - 2xy - 7x + 1
5 and 1
(7a-3b)(4b2+2a)
28ab2+14a2-12b3+6ab
3a + 2b - 5a
a=4
b=2
6
(5xy)(6a2)
30axy2
Name all the like terms.
(4x) + 7y - 3a3 - (2x) + 5a3
4x and 2x
5a3 and 3a3
What are the like terms.
6 + 3a3 + 2y - 6xy + 5a - 8 + 4xy - 9y
6 and 8
2y and 9y
6xy and 4xy
(2a-5y2)(6x-3b)
12ax-6ab-30xy2-15by2
5y - 6y + 2a2
y=2
a=4
14
(30b3)(8ab)
240ab4
FOIL:
(3x-4a)(4a2-3x)
12a2x-9x2-16a4-12ax
How many like terms?
3ab4 + 6b - 6b4 + 5x - 7xy + 8b - 4ab4
4
(7a+4y)(3a-5a)
-14a2-8ay
7x2 - 4b + 2x - 5a3
x=1
b=2
a=5
-15619
(60xy)(30ab4)
1800ab4xy
3(a) - x
x=10
a=5
5