Expanding Binomials
(n+2)(n+3)
n2 +3n + 2n +6
n2 +5n +6
b2 + 8b + 7
(b+7) (b+1)
If I multiply a negative number by a positive number, I make what kind of number?
Negative
What is a variable?
The letter in an expression or equation.
(n+1)(n+2)
n2 +2n + 1n +2
n2 +3n +2
b 2 + 16b + 64
(b+8) (b+8)
What does the I stand for in FOIL?
"Inside/Inner"
The number found in front of (attached to) a variable in an expression or equation.
(x+4)(x-3)
x2 - 3x + 4x - 12
x2 + x - 12
m 2 + 4m - 21
(m+7) (m-3)
What is the name of the method we are using to factor Trinomials?
The Sum-Product method
Meaning of "TRI" in Trinomial
Three (there are three terms in a trinomial)
(r+9)2
r2 + 9r + 9r + 81
r2 + 18r + 81
k 2 + 8k + 16
(k+4) (k+4)
What does the L stand for in FOIL?
Last
What does the F stand for in FOIL?
"First"
(n-10)(n+10)
n2 -10n + 10n - 100
n2 - 100
a 2 - 25
(a+5) (a-5)
When factoring trinomials using the sum-product method, what operation are you doing to make the number that is by itself?
Multiplication
What does the O stand for in FOIL?
"Outside/Outer"