Mathematics

Guest

31 October, 08:47

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)