1) 36 - 25b² = (6 - 5b)(6 + 5b)
2) b² - 0,09c² = (b - 0,3c)(b + 0,3c)
3) 100a² - 81y² = (10a - 9y)(10a + 9y)
4) 16a⁴ - 81 = (4a² - 9)(4a² + 9) = (2a - 3)(2a + 3)(4a² + 9)
5) x²⁰- a⁸ = (x¹⁰ - a⁴)(x¹⁰ + a⁴) = (x⁵ - a²)(x⁵ + a²)(x¹⁰ + a⁴)
1) 36 - 25b² = (6 - 5b)(6 + 5b)
2) b² - 0,09c² = (b - 0,3c)(b + 0,3c)
3) 100a² - 81y² = (10a - 9y)(10a + 9y)
4) 16a⁴ - 81 = (4a² - 9)(4a² + 9) = (2a - 3)(2a + 3)(4a² + 9)
5) x²⁰- a⁸ = (x¹⁰ - a⁴)(x¹⁰ + a⁴) = (x⁵ - a²)(x⁵ + a²)(x¹⁰ + a⁴)