objective: to be able to factor trinomials. objective: to be able to factor trinomials

Objective:To be able to factor trinomials.

9.3 Factoring TrinomialsPart 2

Example 1Factor.x2 − 10x + 16

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 2Factor.m2 − 22m + 21

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 3Factor.d2 + 10 − 7d

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 4Factor.x + x2 – 12

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 5Factor.y2 + 6y – 7

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 6Factor.x2 − 7x – 18

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Example 7Factor.-40 − 18z + z2

To factor a trinomial:1. GCF?2. Put in standard form.3. Is a = 1?4. Draw your parentheses. (x )(x )5. Puzzle: *c for ceiling, b for basement!6. Find the two magic numbers. 7. Fill in your parentheses. *if a magic number

is negative, write as a subtraction inside ( )*8. FOIL/BOX/DISTRIBUTE to check your

answer!

Homework

9.3 SP 537#5-16 all