Question

in the diagram at the right, the length of a square is (3x+7) units. The dimensions of the cut-out rectangle are x by (2x+5) units. Which choice expresses the area of the shaded regions, in square units?​

Answer 1

`{(3x + 7)}^(2) - ((2x + 5) * x)`

`= 7 {x}^(2) - 5x + 49`