(5a²-3b²)+(a²+b²)-(5a²+3b²)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/20 08:05:55
(5a²-3b²)+(a²+b²)-(5a²+3b²)(5a²-3b²)+(a²+b²)-(5a&#

(5a²-3b²)+(a²+b²)-(5a²+3b²)
(5a²-3b²)+(a²+b²)-(5a²+3b²)

(5a²-3b²)+(a²+b²)-(5a²+3b²)
(5a²-3b²)+(a²+b²)-(5a²+3b²)
=5a²-3b²+a²+b²-5a²-3b²
=(5a²+a²-5a²)+(-3b²+b²-3b²)
=a²-5b²

(5a²-3b²)+(a²+b²)-(5a²+3b²)
=(5+1-5)a²+(-3+1-3)b²
=a²-5b²