The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below:
A. Step 1: 8 + 16x B. Step 2: 4(4) + 4(12x) C. Step 3: 4(4 + 12x) D. 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?
C. Step 2; 4(2) + 4(4x)
The first error is at the step 2.It doesn't show the right solution.4(4x),not 4(12x).That is obviously wrong.How could 16 can be 12 even the expression not multiply by any number yet ! that obviously WRONG. C is the right answer