25-(5-x)平方=36-x平方

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25-(5-x)平方=36-x平方25-(5-x)平方=36-x平方25-(5-x)平方=36-x平方x²-(5-x)²=36-25[x+(5-x)][x-(5-x)]=115(2

25-(5-x)平方=36-x平方
25-(5-x)平方=36-x平方

25-(5-x)平方=36-x平方
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

25-(5-x)²=36-x²
25-25+10x-x²=36-x²
10x=36
x=3.6