化简并求值:4x³(-y³)²-3x·(-x)²(-y²)³
化简并求值:4x³(-y³)²-3x·(-x)²(-y²)³
先化简,再求值:(3x²y-2)×y-(9x的4次方y³-15x²y²)÷(3x
化简再求值 4x³(-y³)²-3x×(-x)²(-y²)³
求值:(-3x³y)²+(2x²﹚³·﹙﹣y﹚²﹢4x的6次方y
一、 化简求值1 (x-2-(12)/(x+2))/(4-x)/(x+2)2【(x-y)²+(x+y)(x-y
先化简,在求值:(x-y)²+(3x-2y)(2x+y)-x(6x-y)
化简并求值:4x ³(-y ³)² -3x 乘(-x)²(-y²)&s
化简下列各式,并求值:3(x-y)²-7(x-y)+8(x-y)²+6(x-y) 其中x=2,y
化简求值[1-(2x/x+y)]÷ (x²-2xy+y²/3x+3y)+(x²+xy/x&
化简求值答案(x³-2y³-3x²y)-[3(3x³-2y³)-4x&
因式分解:化简求值:(1).3y²-5xy-2y(2).x³-5x²+6x(3).a
化简求值[(2x²+y)²-5y(3x²+1)-4(x²+y)(x²-