What does E stand for in PEMDAS?
exponents
2A + 2B + 2C
2A + 2B + 2C
3a - 2a
a
a & b
Not like terms
2x2 + 2x + x2 - 1x
3x2 + x
What is an example of two like-terms?
ex: 2x and 32x
5x + 9x + 3y
14x + 3y
5xy - 3xy
2xy
0.5xy & 300xy
like terms
4x + 7x(2x)
18x
What does it mean to discriminate?
to place certain objects in separate groups
23c + 7b + 7c + 3a
30c + 7b + 3a
45x - 13y - 10x - 10y
35x - 3y
80xy & xy
like-terms
(21/7) + 4x - 2x
3 + 2x
What is another way to remember PEMDAS?
Please Excuse My Dear Aunt Sally
13x + 24x + 7y + 8y + 67xy
37x + 15y + 67xy
3x - 6 - 2x - 3
x - 3
0.3x2 & x3
not like terms
(10a - 4a)2 + 6a
42a
What is an expression?
An expression is a complete sentence with a minimum of two numbers and at least one math operation
4xy2 + 28x + 12x + 7y + 8xy2 + 2y + 8x
12xy2 + 48x + 9y
10x2 - 7xy - 3xy - 7x2 - 27 - 7x - 3
3x2 - 4xy - 7x - 24
3x2y & 3xy2
not like terms
(24a-2a) + 13a2 - 2a + 25a2 - 3ab
38a2 + 20a - 3ab