Performance Task No. 4. (Please write it down on a separate sheet of paper) Example : The width of a rectangle is 7y - 11 and the length is 12y? - 15y + 8. Find the area of a rectangle. = (7y-11)(12y? - 15y + 8) = 7y (12y2 - 15y + 8) -- 11(12y2 - 15y+8) = 8448 -105y + 56y-132y2 + 165y-88 = 84y® + (-105y? - 132y>) + (56y + 165y) - 88 = 8449 - 237y² + 2217-88 3
