x²=(x-5)²+120² ,
网友回答
x²=(x-5)²+120²
x^2=x^2-10x+25+14400
10x=14375
x=1437.5
======以下答案可供参考======
供参考答案1:
x^2=x^2-10x+25+14400
10x=14425
x=1442.5
供参考答案2:
x^2=x^2-10x+25+14400
10x=14375
x=1437.5
供参考答案3:
x²=(x-5)²+120² ,
0=-10x+25+120²
0=-2x+5+120*24
x=1442.5