\frac{a + b}{a - b} + \frac{a - b}{a + b} = \frac{(a + b)^2 + (a - b)^2}{(a - b)(a + b)} = \frac{2a^2 + 2b^2}{a^2 - b^2}

Wed, 06 May 2026 07:54:44 +0000

Content under review