Question

a^2-b^2/a+b- a^2-2ab+b^2/a-b
Если а=2,5
b=3 1/2

Answer 1

Объяснение:

$\frac{ {a}^{2} - {b}^{2} }{a + b} - \frac{ {a}^{2} - 2ab + {b}^{2} }{a - b} = \frac{(a - b)(a + b)}{a + b} - \frac{(a - b)^{2} }{a - b} = \frac{ {(a - b)}^{2}(a + b) - {(a - b)}^{2} (a + b) }{ {a}^{2} - {b}^{2} } = \frac{0}{ {a}^{2} - {b}^{2} } = 0$