а) x^2 - y^2 = (x + y)(x - y)б) y^2 - x^2 = (y + x)(y - x)в) a^2 - 9 = (a + 3)(a - 3)г) 16 - b^2 = (4 + b)(4 - b)д) x^2 - 1 = (x + 1)(x - 1)е) 1 - a^2 = (1 + a)(1 - a)ж) a^2 - 0.01 = (a + 0.1)(a - 0.1)з) 4/9 - x^2 = (2/3 + x)(2/3 - x)
а) x^2 - y^2 = (x + y)(x - y)
б) y^2 - x^2 = (y + x)(y - x)
в) a^2 - 9 = (a + 3)(a - 3)
г) 16 - b^2 = (4 + b)(4 - b)
д) x^2 - 1 = (x + 1)(x - 1)
е) 1 - a^2 = (1 + a)(1 - a)
ж) a^2 - 0.01 = (a + 0.1)(a - 0.1)
з) 4/9 - x^2 = (2/3 + x)(2/3 - x)