[x-y]的3次方除以[x-y]=-搜答案-拍题作业网

原式=(x^3y^2-x^2y-x^2y+3x^3y^2)÷3x^2y=(4x^3y^2-2x^2y)÷3x^2y=4/3xy-2/3

8^x/32^y=(2^3)^x/(2^5)^y=2^(3x)/2^(5y)=2^(3x-5y)=2^4=16

（x-y）的7次方除以（y-x）的6次方+（-x-y)的3次方除以（x+y)的2次方=(x-y)的7次方÷(x-y)的6次方-(x+y)³÷(x+y)²=x-y-(x+y)=-2y

(x-y)(z+y-x+y+2y)÷4y=(x-y)(z-x+4y)÷4y{(x+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y=(x-y)(x+y-x+y+2y)÷4y=(x-y)(4

等于xy

化简得（x+y）²×（x-y)最后得x³+x²y-xy²-y³

(x-y)的平方除以(x-y)的6次方=1/(x-y)的4次方

(x^2*y）^4/（x^2*y)+(x^2*y)^3=(x^2*y）^3+(x^2*y)^3=2(x^2*y）^3=2x^6*y^3

【(4x的3次方-1/2y)的2次方+4y(x的2次方-y/16)】除以8x的2次方=(16x的6次方-4x³y+y²/4+4x²y-y²/4)÷（8x

若X>1,y>0,且满足xy=x^y,x/y=x^(3y)相乘得x2=x^(4y)y=0.50.5x=根号x0.25x2=xx=4x+y=4.5

9^(-x)÷27^(-y)=3^(-2x)÷3^(-3y)=3^(-2x+3y)=3^(-2)=1/9

（2x的2次方y）的3次方除以6x的3次方y的2次方=8x的6次方y的3次方除以6x的3次方y的2次方=4/3x³y如追加其它问题,

原式=[(x-y)(x-y)+(x+y)(x-y)]/2x=(x-y)(x-y+x+y)/2x=(x-y)·2x/2x=x-y=3-1.5=1.5

原式=(x-y)^3*(y-x)^4/(y-x)^3/(x-y)=(x-y)^7/(x-y)^3/(x-y)=(x-y)^4/(x-y)=(x-y)^3

2^x/16^y=2^x/2^(4y)=2^(x-4y)因为x-4y-3=0x-4y=3所以2^(x-4y)=2^3=8

（x-y)的十次方除以（y-x)的五次方除以（x-y）=(x-y)^10÷(y-x)^5÷(x-y)=(x-y)^10÷[-(x-y)^5]÷(x-y)=-(x-y)^5÷(x-y)=-(x-y)^4

5x-3y-3=0,那么5x-3y=332的X次方除以8的Y次方=（2的5次方）的X次方除以（2的3次方）的Y次方=2的5X次方除以2的3Y次方=2的（5X-3Y）次方=2的3次方=8

8x平方y四次方（负3x除以4y的六次方除以（负x平方y除以68））=8x²y^4*[-3x÷4y^6÷(-x²y÷68)]=8x²y^4*3x÷4y^6÷(x²

=(x-y)³-2(x-y)³+3(x-y)³=2(x-y)³

(x一Y）的5次方除以（X一Y）的3次方=（X一Y）的2次方