Answer:
x^2-1^2
Step-by-step explanation:
formula:
(a-b)(a+b)=a^2-b^2
Answer:
20, 70
Step-by-step explanation:
9x=90
x=10
angles are 20 and 70
please mark as brainliest
Answer:
20m
Step-by-step explanation:
Area of garden = 400m²
Area = L² = 400m²
L = √400m²
L = 20m
