因式分解: (1)1⼀2a^2+2ab+2b^2 (2)(a+b)^2-4ab (3)a^2(a^2-8b^2)+16b^4 (4)(a+1)(a+2)+1⼀4

(5)(a+b)^2-4(a+b-1)要有过程
2024-12-26 22:36:42
推荐回答(1个)
回答1:

(1)1/2a^2+2ab+2b^2
=(a²+4ab+4b²)/2
=(a+2b)²/2

(2)(a+b)^2-4ab
=a²-2ab+b²
=(a-b)²

(3)a^2(a^2-8b^2)+16b^4
=a^4-8a²b²+16b^4
=(a²-4b²)²
=(a+2b)²(a-2b)²

(4)(a+1)(a+2)+1/4
=a²+3a+9/4
=(a+3/2)²

(5)(a+b)^2-4(a+b-1)
=(a+b)²-4(a+b)+4
=(a+b-2)²

要有过程