Question

数学数学啊

Answer 1

0的0次方才无意义
所以有:
x-y-3=0
2x+3y+4=0 (因平方,绝对值都大于等于0,只有同等于0时整式才等于0)
得: x=1 y=-2
x+y^(x-1)=1+1=2

Answer 2

((x-y-3)^2 +|2x+3y+4| )^0
x-y-3 =0 (1) (1)
2x+3y+4=0 (2)
(2)-2(1)
5y=-10
y=-2
from (1)
x+2-3=0
x=1
x+1/y = 1 - 1/2 =1/2