1 . 16x2-56xy+49y2
Answer: Option C
Explanation:
16x² - 56xy + 49y²
= (4x)² – 2.4x.7y + (7y)²
= (4x - 7y)²
= (4.5 - 7.2)²
= (20 - 14)²
= (6)²
= 36.
Data added successfully.
