Answer:
5 m , 3 m , 15 m²
Explanation:
Given area (A) = x² - 12x + 35 and A = length × breadth , then
x² - 12x + 35 = (x - 5)(x - 7) ← in factored form
We know length = x - 5 , then breadth = x - 7
When x = 10
length = x - 5 = 10 - 5 = 5 m and breadth = x - 7 = 10 - 7 = 3 m
A = 10² - 12(10) + 35 = 100 - 120 + 35 = 15 m²
or
A = length × breadth = 5 × 3 = 15 m²