X²/(10+X)(1-X)=0.
问题描述:
X²/(10+X)(1-X)=0.
help
答
X²=0.178(10+X)(1-X)
X²=-0.178X²-1.602X+1.78
1.178X²+1.602X-1.78=0
接下来套公式就好了数学全还给老师了TT,麻烦你说下套用哪个公式???谢谢!