x^2-9x-100=0
3个回答
x^2-9x-100=0
4x^2-36x-400=0
4x^2-36x+81=481
(2x-9)平方=481
x1=(9+根号481)/2
x2=(9-根号481)/2
相关问题
已知x^2-x-1=0求100x^2-100x+9的值
100x9.5x0.98+9.5x2简便运算
5x+3=x-4,4y+11=22,11x+68-2x=100-9x,0.1x/0.2-(0.27x+0.18)/0.0
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.2
(1+2+3+4+5+6+7+8+9)X100X0=?
解下列方程x平方-9x-36=0 4x平方+12x+9=100 3x(2x-5)=4x-10
√0.9×121/100X0.36
0.75x=100-x-9这个方程的解法
9x+y+z=100 2x+2y+4z=100
11x+42-2x=100-9x-22