1 Answer

Luksurious · Answer 1 · 2021-03-10T17:39:59+0000

Answer:

12x²+4x

Explanation:

the formula for area of a rectangle is length * width so

area = 4x *(3x+1)

12x²+4x

When you multiply x by itself you get x squared and because 4x is not squared the cannot be combined.

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