10/04/27 23:45:23
↑
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a + b)(a - b) = b(a - b)
a + b = b
2b = b
2 = 1
10/04/27 23:45:23
↑
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a + b)(a - b) = b(a - b)
a + b = b
2b = b
2 = 1
10/04/27 23:45:23
↑
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a + b)(a - b) = b(a - b)
a + b = b
2b = b
2 = 1