8x²-72 【x-y】²-10【y-x】=25 9【a-b】²-16【a+b】²【a²+9】²-3ba²【a²+b²】²-4a²b²a的4次方×16a²39×37-13×3的四次方29×19.99+72×19.99+13×19.99-19.99×14【m+n】【p-
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/24 08:56:23
![8x²-72 【x-y】²-10【y-x】=25 9【a-b】²-16【a+b】²【a²+9】²-3ba²【a²+b²】²-4a²b²a的4次方×16a²39×37-13×3的四次方29×19.99+72×19.99+13×19.99-19.99×14【m+n】【p-](/uploads/image/z/15213200-32-0.jpg?t=8x%26%23178%3B-72+%E3%80%90x-y%E3%80%91%26%23178%3B-10%E3%80%90y-x%E3%80%91%3D25+9%E3%80%90a-b%E3%80%91%26%23178%3B-16%E3%80%90a%2Bb%E3%80%91%26%23178%3B%E3%80%90a%26%23178%3B%2B9%E3%80%91%26%23178%3B-3ba%26%23178%3B%E3%80%90a%26%23178%3B%2Bb%26%23178%3B%E3%80%91%26%23178%3B-4a%26%23178%3Bb%26%23178%3Ba%E7%9A%844%E6%AC%A1%E6%96%B9%C3%9716a%26%23178%3B39%C3%9737-13%C3%973%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B929%C3%9719.99%2B72%C3%9719.99%2B13%C3%9719.99-19.99%C3%9714%E3%80%90m%2Bn%E3%80%91%E3%80%90p-)
8x²-72 【x-y】²-10【y-x】=25 9【a-b】²-16【a+b】²【a²+9】²-3ba²【a²+b²】²-4a²b²a的4次方×16a²39×37-13×3的四次方29×19.99+72×19.99+13×19.99-19.99×14【m+n】【p-
8x²-72 【x-y】²-10【y-x】=25 9【a-b】²-16【a+b】²
【a²+9】²-3ba²
【a²+b²】²-4a²b²
a的4次方×16a²
39×37-13×3的四次方
29×19.99+72×19.99+13×19.99-19.99×14
【m+n】【p-q】-【m+n】【q+p】
a+b=-4,ab=2,求4a²b+4ab²-4a-4b
0.4x-1/0.5-5-x/2≤0.03-0.02x/0.03
9【a+2b】²-4【a-b】²
3x的三次方-12x²y+12xy²
8x²-72
【x-y】²-10【y-x】=25
9【a-b】²-16【a+b】²
8x²-72 【x-y】²-10【y-x】=25 9【a-b】²-16【a+b】²【a²+9】²-3ba²【a²+b²】²-4a²b²a的4次方×16a²39×37-13×3的四次方29×19.99+72×19.99+13×19.99-19.99×14【m+n】【p-
【a²+9】²-3ba²=
【a²+b²】²-4a²b²=(a²+b²+2ab)(a²+b²-2ab)=(a+b)(a-b)²
a的4次方×16a²=16a^6
39×37-13×3的四次方=39×37-39×3^3=39(37-27)=39*10=390
29×19.99+72×19.99+13×19.99-19.99×14=19.99(29+72+13-14)=19.99*100=1999
【m+n】【p-q】-【m+n】【q+p】=(m+n)[(p-q)-(q+p)]=(m+n)(p-q-q-p)=-2q(m+n)
a+b=-4,ab=2,求4a²b+4ab²-4a-4b=4ab(a+b)-4(a+b)=4(a+b)(ab-1)=4(-4)(2-1)=-16
0.4x-1/0.5-5-x/2≤0.03-0.02x/0.03
9【a+2b】²-4【a-b】²=[3(a+2b)+2(a-b)][3(a+2b)-2(a-b)]=(5a+4b)(a+8b)
3x的三次方-12x²y+12xy²8x²-72
【x-y】²-10【y-x】=25
9【a-b】²-16【a+b】²