①(3x²y³)²÷(1/3xy²)²-7xy²
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/30 10:20:39
①(3x²y³)²÷(1/3xy²)²-7xy²
②(1/2-π/3)^0+(1/2)³×(-8)+2013²-2014²
③-2014×2010
④1999²
②(1/2-π/3)^0+(1/2)³×(-8)+2013²-2014²
③-2014×2010
④1999²
1.27x4y6*9x2y4-7xy2=243x6y10-7xy2
2.1+(-1)+(2013-2014)(2013+2014)=-4027
3.-(2012+2)(2012-2)=-2012²+4=-(2000+12)²+4=-4000000-48000-144+4=-4048140
4.(2000-1)²=4000000-4000+1=3996001
2.1+(-1)+(2013-2014)(2013+2014)=-4027
3.-(2012+2)(2012-2)=-2012²+4=-(2000+12)²+4=-4000000-48000-144+4=-4048140
4.(2000-1)²=4000000-4000+1=3996001
①(3x²y³)²÷(1/3xy²)²-7xy²
计算:(-7x²y)(2x²y-3xy³+xy)
(3xy)² · (x²+xy-y²)-3xy(3x³y+3x²y
先化简,再求值:{xy(x²-3y)+3xy²}(-2xy)+x³y²(2x-y
计算[5xy²(x²-3xy)-(-3x²y²)³]÷(-5xy)
计算:(xy-x²)×x-y/xy
已知(x+1)²+|y-1|=0,求2(xy-5xy²)-(3xy²-xy)得值
[-xy/(x-y)²]²×(y²-xy/x)³
下列多项式:(1)x²+xy-y²;(2)-x²+2xy-y²;(3)xy+x&
化简求值3x²y-[2xy-2(xy-3/2x²y)+xy]+3xy²其中x=3、y=-1
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
x-y/x²÷x²-2xy+y²/xy*(xy-x²)