Recent Changes

9.7 Factoring Special Cases
9.8 Factoring by Grouping
Here you will find solutions to all 44 problems on the Practice 9–8 work sheet.
{Practice 9–8 Solutions.pdf}
Here you will find solutions to all 44 problems on the Practice 9–8 work sheet:
{Practice 9–8 Solutions.pdf}

{Notes 9-2.pdf}
9.3 Multiplying Binomials
{Notes 9-3.pdf}
You can use the acronym FOIL to multiply two binomials:
F – First/first
Last/last: 3 * 4 = 12
Adding these up: (x + 3)(x+4) = x2 + 4x + 3x + 12 = x2 + 7x + 12
{Notes 9-3.pdf}
9.4 Multiplying Special Cases
(x+a)2 = (x+a)(x+a) = x2 + xa + ax + a2 = x2 + 2ax + a2
(x+a)(x–a) = x2 + xa – ax – a2 = x2 – a2
9.5 Factoring Trinomials of the Type x2 + bx + c
{Notes 9-5.pdf}
Find factors of c that add up to b.
Example: Factor x2 + 5x + 6.
Use FOIL to check your answer.
9.6 Factoring Trinomials of the Type ax2 + bx + c
{Notes 9-6.pdf}
9.7 Factoring Special Cases
9.8 Factoring by Grouping

{Chapter 9 Syllabus.pdf}
9.1 Adding and Subtracting Polynomials
{Notes 9-1.pdf}
9.2 Multiplying and Factoring
{Notes 9-2.pdf}
9.3 Multiplying Binomials
You can use the acronym FOIL to multiply two binomials:
Last/last: 3 * 4 = 12
Adding these up: (x + 3)(x+4) = x2 + 4x + 3x + 12 = x2 + 7x + 12
{Notes 9-3.pdf}
9.4 Multiplying Special Cases
(x+a)2 = (x+a)(x+a) = x2 + xa + ax + a2 = x2 + 2ax + a2