|3—兀|+根号下兀的平方一8兀+16等于多少

问题描述:

|3—兀|+根号下兀的平方一8兀+16等于多少

|3-π|+√π²-8π+16
=(π-3)+π-8π+16
=π-3+π-8π+16
=-6π+13