因式分解:3x的三次方加7x的平方减4等于多少
人气:471 ℃ 时间:2019-08-18 04:24:45
解答
3x的三次方加7x的平方减4
=(3x³+6x²)+(x²-4)
=3x²(x+2)+(x+2)(x-2)
=(x+2)(3x²+x-2)
=(x+2)(x+1)(3x-2)
推荐
猜你喜欢
- ( E ) is very important in our daily life.Don't waste it.
- 怎样通过实验证明声音在真空中不能传声
- 已知三角形两边分别长1和2 第三边长是方程x²-3x+2=0的根,求三角形的周长
- It was a turning point in his career.
- 体育老师将皮球从高处自由下落,每次接触地面后弹起的高度的5分之2,如果皮球从50米的高处落下,那么皮球第4次弹的高度是多少米?算式.
- _____ the parents _____ their daughter have been to Australia.A.neither,nor B.either,or C.both,and D.not only,but also选什
- 3除以7,商的小数部分第15位是几,第25位呢?
- 甲乙两人同时从两地相向而行,在距离中点20米处相遇,已知甲行了全程的45%,甲行了几米?