а)x²-y² =(x-y)(x+y)
б) c²-z² = (c-z)(c+z)
в)16-b²=4²-b² = (4-b)(4+b)
г)25/49-p² = (5/7)² - p² = (5/7-p)(5/7+p)
(x-z)(c+z)
(4-b)(4+b)
(5/7-p)(5/7+p)
а)x²-y² =(x-y)(x+y)
б) c²-z² = (c-z)(c+z)
в)16-b²=4²-b² = (4-b)(4+b)
г)25/49-p² = (5/7)² - p² = (5/7-p)(5/7+p)