PLEASE HELP! I GIVE MEDALS!! :)
Which shows 512 - 492 being evaluated using the difference of squares method?

A.512 - 492 = 2601 - 2401 = 200
B.512 - 492 = (51 + 49)(51 - 49) = (100)(2) = 200
C.512 - 492 = (51 - 49)2 = 22 = 4
D.512 - 492 = (2601 + 2401)(2601 - 2401) = 1,000,400

Question

PLEASE HELP! I GIVE MEDALS!! :)	
Which shows 512 - 492 being evaluated using the difference of squares method?
 	
A.512 - 492 = 2601 - 2401 = 200
B.512 - 492 = (51 + 49)(51 - 49) = (100)(2) = 200
C.512 - 492 = (51 - 49)2 = 22 = 4
D.512 - 492 = (2601 + 2401)(2601 - 2401) = 1,000,400

jim_thompson5910 · Answer

hint: 

$$\Large a^2 - b^2 = (a-b)(a+b)$$

jim_thompson5910 · Answer

That's the general difference of squares formula