Explanation:
1. The length of the vegetable garden is:
(x² − 7x + 2) + (x² + 1) = 2x² − 7x + 3
The length of the potato garden is therefore:
(2x² − 7x + 3) − (x² − 9) = x² − 7x + 12
2. m + x² + 1 = x² − 7x + 12
m = -7x + 11
3. The perimeter of the corn garden is:
P = (x² − 7x + 2) + (x − 1) + (-7x + 11) + (x + 6) + (x² − 9) + (x + 6) + (x − 1)
P = 2x² − 10x + 14
4. The area of the bean garden is width time length:
A = (x − 1) (x² + 1)
A = x³ − x² + x − 1
Mark is correct.