|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
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|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
|m-5|+(n+3)²=0,求m²- n²+2m-5n的值
|m-5|+(n+3)²=0,求m²- n²+2m-5n的值