а) 16m^2 - 25n^4 = (4m)^2 - (5n^2)^2 = (4m + 5n^2)(4m - 5n^2)б) 0,09a^4 - 9b^2 = 0,3a^2 - 3b)(0,3a^2 + 3b)в) (2a + 3)^2 - 4 = (2a + 3 + 2)(2a + 3 - 2) = (2a + 5)(2a + 1)г) 36 - (1 - 5x)^2 = 36 - (1 - 5x)(1 - 5x) = 36 - (1 - 5x)(1 - 5x) = 36 - (1 - 5x)^2 = 36 - (1 - 10x + 25x^2) = 36 - 1 + 10x - 25x^2 = 35 + 10x - 25x^2 = 5(7 + 2x - 5x^2) = 5(2x - 7)(5x + 1)
а) 16m^2 - 25n^4 = (4m)^2 - (5n^2)^2 = (4m + 5n^2)(4m - 5n^2)
б) 0,09a^4 - 9b^2 = 0,3a^2 - 3b)(0,3a^2 + 3b)
в) (2a + 3)^2 - 4 = (2a + 3 + 2)(2a + 3 - 2) = (2a + 5)(2a + 1)
г) 36 - (1 - 5x)^2 = 36 - (1 - 5x)(1 - 5x) = 36 - (1 - 5x)(1 - 5x) = 36 - (1 - 5x)^2 = 36 - (1 - 10x + 25x^2) = 36 - 1 + 10x - 25x^2 = 35 + 10x - 25x^2 = 5(7 + 2x - 5x^2) = 5(2x - 7)(5x + 1)