25-(5-x)平方=36-x平方
问题描述:
25-(5-x)平方=36-x平方
答
25-(5-x)²=36-x²
25-25+10x-x²=36-x²
10x=36
x=3.6
答
x²-(5-x)²=36-25
[x+(5-x)][x-(5-x)]=11
5(2x-5)=11
10x-25=11
10x=36
x=3.6