99,999^2 - 1^2 =
A. 10^10 - 2
B. (10^5 - 2)^2
C. 10^4(10^5 - 2)
D. 10^5(10^4 - 2)
E. 10^5(10^5 - 2)
A. 10^10 - 2
B. (10^5 - 2)^2
C. 10^4(10^5 - 2)
D. 10^5(10^4 - 2)
E. 10^5(10^5 - 2)
99,999^2 - 1^2
a^2 - b^2 = (a-b)(a+b)
(99999+1)(99999-1)
10^5(10^5-2)
Option E
