Mathematics, 07.09.2019 03:10 hey840

The work of a student to find the dimensions of a rectangle of area 8 + 12x and width 4 is shown below:
step 1: 8 + 12x
step 2: 4(2) + 4x(2)
step 3: 4(4 + 8x)
step 4: dimensions of the rectangle are 4 and 4 + 8x
in which step did the student first make an error and what is the correct step?
step 2; 4(2) + 4x(2)
step 2; 4(2) + 4(3x)
step 3; 4+ (4 + 8x)
step 3; 4 + (48x)

Answers: 1

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