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Which of the binomials below is a factor of this trinomial? x2 - 9x + 20 A. x + 5 B. x + 2 C. x - 5 D. x - 2
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Which of the binomials below is a factor of this trinomial? x2 - 9x + 20 A. x + 5 B. x + 2 C. x - 5 D. x - 2
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Sep 7, 2019
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Which of the binomials below is a factor of this trinomial?
x2 - 9x + 20
A. x + 5
B. x + 2
C. x - 5
D. x - 2
Mathematics
high-school
DaveP
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DaveP
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factor: x^2 - 9x + 20
(x)(x) (- 4)(- 5)
result = (x - 4)(x - 5)
irreducible factorization:
(x - 5) (x - 4)
Check:
(x - 4)(x - 5)
(x)(x) (x)(- 5) (- 4)(x) (- 4)(- 5)
x^2 - 5x - 4x + 20
x^2 - 9x + 20
Hope that helps!!!
Jwebb
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Sep 11, 2019
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Jwebb
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