Example - Factoring Trinomials ***3.5***
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Factoring Trinomials by Mr. Northrup
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Transcript of Example - Factoring Trinomials ***3.5***
Factoring Trinomialsby Mr. Northrup
Directions: Factor into two binomials
x2 + 2x - 8
x2 x x -1
-1-1
-1
-1
-1-1
-1x2 + 2x - 8
x x0 = 0 =
-x -x
x2 x x
-1
-1-1
-1 -1
-1-1
-1
x2 + 2x - 8
x
-x
x
-x
(x - 2)
(x + 4)
x2 + 2x - 8 = (x - 2)(x + 4)
Answer
(x - 2)(x + 4)multiply x -2
x x2 -2x
4 4x -8x2 + 4x - 2x - 8 = x2 + 2x - 8(x - 2)(x + 4) = x2 + 2x - 8
