Like Terms
a + a + b
2a + b
4x2 - 2x2
2x2
What is x + 4 when x=5
9
What is 3x when x=2
What is a like term
a term that has the same variable raised to the same power
3a + 2b + 4a
7a + 2b
4a + 5c - 7f + 3a - 2c
7a + 3c - 7f
What is 2x when x=4
What is 3w - 8f + 2w when w=3 and f=1
7
what does this mean 2a (what are we doing with the 2 and the a)
2 x a
4n - 3n + 5m
n + 5m
8m + 7mn - 3m + 2nm
5m + 9mn
What is 2x + 3 when x=4
11
What is 60 + x - 3y when x=3 and y=4
52
What is the 'variable' in 2a + 4
a
5g + 7h - 3g - 5h
2g + 2h
20 + 4g - 10 + 8h + 2g
6g + 8h + 10
What is 4x + 3 when x=6
27
What is 4rd - 2 when r=4 and d=2
30
what is substitution
when we put a number in for a variable
7ab - 3bc + 2ab + 8bc
9ab + 5bc
5pq - 3p2q2 + 5p3q3
5pq - 3p2q2 + 5p3q3
What is 3 (x+y) when x=5 and y=3
24
What is 5x - 2y + 2x when x=2 and y=3
5
which of the following are "terms"
2
2x
x
all of them