☻☺☻☜☜◀数学一题▶☞☞☻☺☻☺已知abc为三角形△ABC的三边,且满足关系式|2a-b-1|+（a-2）²=0,若c为偶数,求出c的值

☻☺☻☜☜◀数学一题▶☞☞☻☺☻☺已知abc为三角形△ABC的三边,且满足关系式|2a-b-1|+（a-2）²=0,若c为偶数,求出c的值
☻☺☻☜☜◀数学一题▶☞☞☻☺☻☺
已知abc为三角形△ABC的三边,且满足关系式|2a-b-1|+（a-2）²=0,若c为偶数,求出c的值

☻☺☻☜☜◀数学一题▶☞☞☻☺☻☺已知abc为三角形△ABC的三边,且满足关系式|2a-b-1|+（a-2）²=0,若c为偶数,求出c的值
|2a-b-1|+（a-2）²=0
2a-b=1
a=2
4-b=1
b=3
a+b>c
|a-b|1c=2,4