Question

The work of a student to find the dimensions of a rectangle of area 6 + 8x and width 2 is shown below: Step 1: 6 + 8x Step 2: 2(4) + 2(6x) Step 3: 2(4 + 6x) Step 4: Dimensions of the rectangle are 2 and 4 + 6x
In which step did the student first make an error and what is the correct step?
Step 3; 2 + (4 + 6x)
Step 3; 2 + (4 ⋅ 6x)
Step 2; 2(4) + 2(4x)
Step 2; 2(3) + 2(4x)

Answer 1

Step-by-step explanation:

the student first made mistake in step 2 and the correct step is

step:2= 2(3) +2(4x)