3x²+xy-2y²因式分解
人气:496 ℃ 时间:2019-10-01 09:27:01
解答
3x²+xy-2y²
=x²+xy+2x²-2y²
=x(x+y)+2(x+y)(x-y)
=(x+y)(x+2x-2y)
=(x+y)(3x-2y)
推荐
猜你喜欢
- he sits () tom and mary 注 between不能用,因为我这里没有between选择
- 48,a,b,c,-12是等差数列中的连续五项,则a,b,c的值
- 八年级上册函数习题
- 当a的取值范围是_____时,级数∑n^2/a^n收敛,求解过程.
- 一个半圆和一个三角形(组合图形)半圆的直径是12厘米三角形是等腰直角三角形求面积
- 125×(8×4)=125×8+125×4=1000+500=1500对吗?
- many teachers don`t like their stuents to use e-mail english in their 什么english
- 趣味数学题,要有答案!