Разложите на множители1) 144-49 y^2= 2)a^9b^6-c^3= 3)(a+b)^3-(a-b)^3
1) 144-49y² =(12)² - (7y)² =(12-7y)(12+7y) 2) a^9b^6-c^3=(a³b²)³ - c³ =(a³b²-c)(a^6b^4+a³b²c+c²) 3) (a+b)³-(a-b)³ =(a+b-a+b)* ((a+b)²+(a+b)(a-b) +(a-b)²)= =2b*(a²+2ab+b²+a²-b²+a²-2ab+b²)=2b(3a²+b²)