> 数学 >
2(x-xy)-3(2x2-3xy)2[x2(2x2-xy+y2)]
人气:268 ℃ 时间:2020-04-27 19:13:14
解答
2(x-xy)-3(2x2-3xy)
=2x-2xy-6x²+9xy
=-6x²+2x+7xy
2[x2(2x2-xy+y2)]
=4x⁴-2x³y+2x²y²
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版