C8L5 Notes
Factoring x2 + bx + c
2
To factor x + bx + c, find two numbers whose product equals c and
whose sum equals b.
Factor the quadratic trinomial.
9
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2. x 2 -5x + 6
I'C?
3. x2 + 3x-18
5. x2 + 2x-24
/.IS-
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4. x 2 -2x-15
6. x 2 -2x-24
7. x2-10x + 24
8. x 2 -10x-24
9. x -14x + 24
10.
A/5
11. x 2 -5x-24
12. x2 + 5x-24
13. x 2 + l l x + 24
14. x 2 - llx + 24
X-3
16. x2 + x-20
15. x 2 -8x-48
j-2,0
2'/0
3'/4
17. x2- 2 /*__
x y - 3^»^_.2
5y
19. x 1 0 +llx 5
-> ^ —
/ 30
< o _2 i * f t _ i _ i i^ri.2
18.
a + lOab + 16b
20. x 6 -3x 3 -10
/O
21. The area of a rectangle is given by the trinomial x2 - 2x - 35. What
are the possible dimensions of the rectangle? Use factoring.
X
OF A AecrftN&uz is ft- Ji
So rrte DimeAjsiDAjs AH€ (x-7)
22. A rectangle's area is x2 - x - 72. What are possible dimensions of the
rectangle? Use factoring.