Mathematics, 01.01.2020 10:31, 21hendlill

(06.06 mc)

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)

Answers: 2

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(06.06 mc)

the work of a student to find the dimensions of a rectangle of area 8 + 16x a...