I ONLY NEED HELP WITH PART C I DID THE REST ON MY OWN plz help

Question

Shane drew 3 squares with each side equal to n units. For each square, he does something different to it according to each part below.

Part A: Shane increased the length and width of the square by m units each. What will be the change in the area of the original square? Show your work. (4 points)

Part B: Shane decreased the length and width of the square by m units each. What will be the change in the area of the square? Show your work. (3 points)

Part C: Shane increased the length of the square by m units and decreased its width by m units. What will be the change in the area of the square? Show your work. (3 points)

Answer 1

Original square area = n*n u²
New dimensions: (n+m), (n-m)
New area = (n+m)(n-m)=n²-m² u²
Change in area = difference of above areas.

Answer 2

Chyttr