第3个回答 2016-03-31
a^2-b^2-5√(a^2+b^2) +6 =0 (1)
2ab=0 (2)
from (2)
a=0 or b=0
case 1: a=0
a^2-b^2-5√(a^2+b^2) +6 =0
-b^2-5√(b^2) +6 =0
b^2+5b-6=0
(b+6)(b-1)=0
b=1 or -6
case 2: b=0
a^2-b^2-5√(a^2+b^2) +6 =0
a^2-5√(a^2) +6 =0
a^2-5a+6=0
(a-2)(a-3)=0
a=2 or 3
solution
(a,b)=(0,1) or (0,-6) or (2,0) or (3,0)本回答被网友采纳