Factoring Trinomials: a > 1 Answers

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Consider the trinomial 9x2 + 21x + 10.

Answers:
What value is placed on top of the X?:90
What value is placed on the bottom of the X?:21
Selection 3:(3x + 2)(3x + 5)
80238

Complete the factorization of 3x2 – 10x + 8.

Answers:
Blank 1:80238
Blank 2:80239
83463

Which statement is true of a rectangle that has an area of 4x2 + 39x – 10 square units and a width of (x + 10) units?

A
The rectangle is a square.
B
The rectangle has a length of (2x – 5) units.
C
The perimeter of the rectangle is (10x + 18) units.
D
The area of the rectangle can be represented by (4x2 + 20x – 2x – 10) square units.
83464

Determine if Ginny factored correctly. If not, explain where she made an error.

A
Ginny made a mistake in step 1 when she identified b = 31. It should be b = –31.
B
Ginny was correct until step 3 when she used 36 and –5 as the coefficients of x.
C
Ginny was correct until step 4 when she incorrectly factored the GCF from 5x – 30.
D
Ginny factored the trinomial correctly.

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Factoring Trinomials: a > 1 Answers…