Mathematics
AnalisaLesch917
35

The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below: Step 1: 8 + 16x Step 2: 4(4) + 4(12x) Step 3: 4(4 + 12x) Step 4: Dimensions of the rectangle are 4 and 4 + 12x In which step did the student first make an error and what is the correct step? Step 3; 4 + (4 + 12x) Step 3; 4 + (4 ⋅ 12x) Step 2; 4(2) + 4(4x) Step 2; 4(2) + 4x(2)

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(1) Answers
AnnieMarie14

[latex]8+16x= \\ 4(2)+4(4x)= \\ 4(2+4x)[/latex] The student made an error in step 2. It should be 4(2)+4(4x).

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