Page 125 - Math Course 2 (Book 1)

Trinomials: ax + bx + c
2

Solve Equations by Factoring Real World Example

2
Solve 12x + 19x + 5 = 0. When Mario jumps over a hurdle, his feet leave the
1 ground traveling at an initial upward velocity of 12
A. { 0, – }
3 feet per second. Find the time t in seconds it takes
for Mario’s feet to reach the ground again. Use the
1 5 2
B. { } equation h = –16t + vt + s.
–
,–
3 4
A. 1 second
C. {–1, –5}
B. 0 seconds
1
5
D. { }
,–
–
3 3 C. seconds
3
4
Answer D. seconds
1
2
Answer

Factor each trinomial, if possible. If the trinomial cannot be
Skill Practice! factored using integers, write prime.

2
2
1. 2x + 5x + 2 2. 3n + 5n + 2

2
2
3. 2s + 9s – 5 4. 3g – 7g + 2

2
2
5. 2t – 11t + 15 6. 2x + 3x – 6

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