a^2+2ab+b^2-6a+6b+5a^2-2ab+b^2-6a+6b+5
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 03:01:29
![a^2+2ab+b^2-6a+6b+5a^2-2ab+b^2-6a+6b+5](/uploads/image/z/1103840-8-0.jpg?t=a%5E2%2B2ab%2Bb%5E2-6a%2B6b%2B5a%5E2-2ab%2Bb%5E2-6a%2B6b%2B5)
a^2+2ab+b^2-6a+6b+5a^2-2ab+b^2-6a+6b+5
a^2+2ab+b^2-6a+6b+5
a^2-2ab+b^2-6a+6b+5
a^2+2ab+b^2-6a+6b+5a^2-2ab+b^2-6a+6b+5
原式=(a²-2ab+b²)-(6a-6b)+5
=(a-b)²-6(a-b)+5
=(a-b-1)(a-b-5)