Question

Please Help 100 Points

One side of a square has a length of (−3x + 7). What is the area of the square?

One side of a square has a length of (−3x + 7). What is the perimeter of the square?

Answer 1

$area = side \times side \\ = ( - 3x + 7)( - 3x + 7) \\ = 9x^{2} - 21x - 21x + 49 \\ = 9x^{2} - 42x + 49 \\ \\ parimeter = 4a \\ = 4( - 3x+ 7) \\ = - 12x + 28$