faktorkan 1. 16a²-81b² 2. 25a²-b² 3. c²-16 4. y²+12y+35 5. x²+14x+45 pakai cara

1. ( 4a)² - (9b)²= (4a + 9b)(4a - 9b)
2. (5a)² - (b)² = ( 5a+ b ) (5a - b )
3. (c)² - (4)² = (c + 4)(c-4)
4. ( y + 7 ) ( y + 5)
5. ( x + 9)(x + 5)