Answers TX-Algebra I A-CRUnit Test

Factoring Trinomials: a > 1 Answers

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Which expression is the factorization of x2 + 10x + 21?

(x + 3)(x + 7)

(x + 4)(x + 6)

(x + 6)(x + 15)

(x + 7)(x + 14)

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Bailey writes the expression g2 + 14g + 40 to represent the area of a planned school garden in square feet. What factors can be used to find the dimensions of her garden?

(g−4)(g−10)

(g+4)(g+10)

(g+4)(g−10)

(g−4)(g+10)

The binomial (a+5) is a factor of a2+7a+10. What is the other factor?

(a+2)

(a+5)

(a−2)

(a−5)

The diagram represents the factorization of a2+8a+12.

The model represents x2 – 9x + 14.

x – 9

x – 2

x + 5

x + 7

Which are perfect square trinomials? Select two options.x2 − 9x2 −100x2 − 4x + 4x2 + 10x + 25x2 + 15x + 36

x2 − 9

x2 −100

x2 − 4x + 4

x2 + 10x + 25

x2 + 15x + 36

What is the factored form of the polynomial?x2 − 12x + 27?

(x + 4)(x + 3)

(x − 4)(x + 3)

(x + 9)(x + 3)

(x − 9)(x − 3)

Ms. Wilson draws a model of the factorization of a polynomial with integer factors. Her model is partially complete. Which equation is represented by Ms. Wilson’s model?

n2 + 3n + 40 = (n – 8)(n – 5)

n2 + 13n + 40 = (n + 8)(n + 5)

n2 + 40n + 13 = (n + 8)(n + 5)

n2 + 40n + 3 = (n – 8)(n – 5)

The model represents a polynomial and its factors.

x2 – 2x – 3 = (x – 3)(x + 1)

x2 – 4x + 3 = (x – 3)(x – 1)

x2 + 2x + 3 = (x + 3)(x – 1)

x2 + 4x – 3 = (x + 3)(x + 1)

The binomial (y − 2) is a factor of y2 − 10y + 16. What is the other factor?

(y − 5)

(y + 5)

(y − 8)

(y + 8)

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Factoring Trinomials: a > 1 Answers

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