25=x(10-x)
25=10x-x²
x²-10x+25=0
(x-5)²=0
x-5=0
x=5
猜你喜欢
- 1物质汞和氧气是由什么粒子构成的
- 2已知点M(3,1),直线ax-y+4=0及圆(x-1)2+(y-2)2=4. (1)求过M点的圆的切线方程; (2)若直线ax-y+4=0与圆相切,求a的值.
- 3矩形的两条对角线的夹角为60°,对角线长为10,则矩形的面积为_.
- 4基因工程在医药卫生方面,为什么主要用于生产基因药物.过程是?
- 5He has tried four times,but his teacher wants him to try___fifth time
- 6Be all you can be!……And…all you will be
- 7函数F(X)=ax-b/x+Inx 当F(1)=0时,若函数F(X)是单调函数,求实数a的取值范围
- 8因式分解(x+2y)^2-4x^2
- 9Please give the oranges to him(同义句)Please ()()the oranges
- 101*4分之1+2*5分之1+3*6分之1+.+9*12分之1 简算