1. Assignment:
1­­>L8.4, pg. 496, #2­28 (evens) ­ skip #22 ­ Due Wednesday (3/28)
2­­>Checkpoint 8.1 ­ 8.3 ­ Due Wednesday (3/28)
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2. Lesson 8.4 WarmUp:
Factor each polynomial.
1) 14c + 2c2
2) 12jk2 + 6j2k + 2j2k2
Solve each equation. Check your solutions.
3) 3x(x ­ 10) = 0
4) x2 = 14x
5) (4x + 2)(3x ­ 9) = 0
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3. Lesson 8.4:
*To factor trinomials that don't have a leading coefficient of "1"...
ax2 + bx + c...
find 2 integers, m and p, with a sum of b and a product of ac.
then write ax2 + mx + px + c, and factor by grouping.
ex­­>2x2 + 5x + 3
sum of
factors factors
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4. *prime polynomial ­ a polynomial that cannot be written as a product of 2
polynomials with integer coefficients
ex­­>4x2 ­ 3x + 5
sum of
factors factors
****Always make sure and "factor" the trinomial first!
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5. Lesson 8.4 examples:
Factor each polynomial. If it can't be factored using integers, write prime.
A) 7x2 + 29x + 4 sum of
factors factors
B) 3x2 + 15x + 18
sum of
factors factors
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6. sum of
C) 3x2 ­ 17x + 20 factors factors
D) 2x2 ­ x ­ 1
sum of
factors factors
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7. E) 4x2 ­ 3x + 5 sum of
factors factors
F) 4x2 ­ x + 7 factors
sum of
factors
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8. Solve each equation. Check your solutions.
sum of
G) 2x2 + 9x ­ 18 = 0 factors factors
H) 3x2 ­ 10x = ­8 sum of
factors factors
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