tell whether or not the given binomial is a difference of two squares.
1. a² - 121
2. c² -18
3. d³ - 25
4. 25e² - 16
5. 49f² - 2g²
6. 64 + h⁴
7. 4m⁴ - 4n²
8. 2(q² - 4)
9. r² - 9s⁴
10. t¹⁴ - u¹²​


Sagot :