5.5c: factoring trinomials - barrington 220 school ...€¦ · +7x+3 4y2 _ 15y+9 3y2 - 22y + 39...

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Alg2C 5.5C Notes 1 Motivation Distribute. Factor. Algebra II C 5.5C: Factoring Trinomials 12/2/16

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Page 1: 5.5C: Factoring Trinomials - Barrington 220 School ...€¦ · +7x+3 4y2 _ 15y+9 3y2 - 22y + 39 5.r2 + 26x + 5 I Iy2 — 8y2 _ 47_v+ 12 18v +9 + 10 17x 6.r2 41xy 10 12 — 7y2 6x2

Alg2C 5.5C Notes

1

Motivation

Distribute. Factor.

Algebra II C

5.5C: Factoring Trinomials

12/2/16

Page 2: 5.5C: Factoring Trinomials - Barrington 220 School ...€¦ · +7x+3 4y2 _ 15y+9 3y2 - 22y + 39 5.r2 + 26x + 5 I Iy2 — 8y2 _ 47_v+ 12 18v +9 + 10 17x 6.r2 41xy 10 12 — 7y2 6x2

Alg2C 5.5C Notes

2

Steps to Factor (AC Method)

1.

2.

3.

4.

Multiply AC.

Find factors of AC that add to give you B.

Divide those numbers by A and reduce.

Put variable in bottom and write answers "bottom up".

Ex 1.

Factor.

Ex 2.

Page 3: 5.5C: Factoring Trinomials - Barrington 220 School ...€¦ · +7x+3 4y2 _ 15y+9 3y2 - 22y + 39 5.r2 + 26x + 5 I Iy2 — 8y2 _ 47_v+ 12 18v +9 + 10 17x 6.r2 41xy 10 12 — 7y2 6x2

Alg2C 5.5C Notes

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Ex 3. Ex 4.

Ex 5. Ex 6.

Page 4: 5.5C: Factoring Trinomials - Barrington 220 School ...€¦ · +7x+3 4y2 _ 15y+9 3y2 - 22y + 39 5.r2 + 26x + 5 I Iy2 — 8y2 _ 47_v+ 12 18v +9 + 10 17x 6.r2 41xy 10 12 — 7y2 6x2

Alg2C 5.5C Notes

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Ex 7. Ex 8.

p.317 #51­77(o)