-x²+7x-12=0
x²-7x+12=0
(x-3)(x-4)=0
x-3=0或x-4=0
x=3或x=4
对我的回答有不明白可以追问!
猜你喜欢
- 1在圆柱形储水桶里,把一段半径5cm钢放入水中 ,水面上升9cm,钢竖着拉出水面8cm后,水面下降4cm.求圆钢体积
- 21.crossing,to,turn,third,remember,at,the,right(.) 连词成句
- 3It is raining outside 环形填空
- 4先约分,是假分数的要化成整数或带分数 51分之34 = 30分之16 14分之70= 100分之255
- 5在海洋中生存最好的动物是什么?
- 6月球是地球的卫星吗?太阳系都包括哪些星球?
- 7TELL ME ,HOW SOON I COULD GET YOUR PURE LOVE
- 8Please take notes when ___(discuss) the problem.
- 9They also want to go there on foot.(改为同义句)
- 101.She ( ) her success to hard word and strong will.