Question

Suzie is generating an expression equivalent to 3x-4+5(6x-8). Her work is shown below.

Step 1: 3x-4+30x-40
Step 2: 27x+36
Step 3: 9(3x+4)

Question 1- Which step has an error?
A.step 1
B.step 2
C.step 3

Question2- Which of the following is the correct factored version of the original expression?
A.11(3x - 4)
B.11(-3x - 4)
C.11(4x - 3)

Answer 1

• 1. B. Step 2 has an error. Instead of adding 3x and 30x, Suzie has subtracted 3x from 30x. And also, she has not added -4 and -40. The correct step will be 33x - 44.
• 2. A. 11(3x - 4).The next step will be 11(3x - 4).

Answers:

1. B. Step 2
2. A. 11(3x - 4)

Hope you could understand.

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