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Mathematics 16 Online
OpenStudy (anonymous):

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(4) + 4(8x) 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 + (4 ⋅ 8x) Help please!!! Can someone explain to me how to do this?

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