
1.(根号X-根号Y)平方=X+Y-2*根号X*根号Y,X+Y=5,根号X*根号Y=6,X=2,Y=3或X=3,Y=22.(6+根号26)/623.a平方+b平方-4a-2b+5=0,(A-2)^2+(B-1)^2=0,A=2,B=1,根号5b-2a分之根号a+b的值=根号3

1.(根号X-根号Y)平方=X+Y-2*根号X*根号Y,X+Y=5,根号X*根号Y=6,X=2,Y=3或X=3,Y=22.(6+根号26)/623.a平方+b平方-4a-2b+5=0,(A-2)^2+(B-1)^2=0,A=2,B=1,根号5b-2a分之根号a+b的值=根号3