(x-y)的7次方÷(y-x)6次方+(-x-y)³÷(x+y)²=
整理式子,得 (x-y)^7\/(y-x)^6+(-x-y)³\/(x+y)²=(x-y)^7\/-(x-y)^6-(x+y)³\/(x+y)²约分,得 = x-y-x-y = -2X-2Y
(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
计算:(x-y)的七次方除以(y-x)的六次方+(-x-y)的三次方除以(x+y)的...
回答:原式=x-y-(x+y) =-2y
数学计算:(x-y)^7\/(y-x)^6+(-y-x)^3\/...
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初一数学,要有过程格式。
因为,x的n次方=6,所以x的n次方的平方(x的2n次方)=36;x的(m-2n)次方=x的m次方÷x的2n次方=3÷36=1\/12;第三题:(x-y)^7÷(y-x)^6 +(-x-y)^3÷(x+y)^2 =(x-y)^7÷[-1(x-y)]^6 + [-1(x+y)]^3 ÷(x+y)^2 =(x-y)-(x+y)=-2y ...
(x-y)^7\/(x-y)^3*(y-x)^7
解:如果是[(x-y)^7\/(x-y)³]×(y-x)^7,那么 原式=(x-y)^7÷(x-y)³×[-1×(x-y)]^7 =(x-y)^7÷(x-y)³×(-1)^7×(x-y)^7 =(x-y)^(7-3+7)×(-1)= -(x-y)^11 如果是(x-y)^7\/[(x-y)³×(y-x)^7],那么 原式=(x-...
(x-y)²+y(y-x)因式分解?
因式分解 (x-y)²+y(y-x)=(x-y)²-y(x-y)=(x-y-y)(x-y)=(x-2y)(x-y)
(x-y)的平方(y-x)的七次方=
原式=(x-y)²*[-(x-y)的7次方]--(x-y)的9次方
(x+y)的七次方 除以 (-x-y)的七次方 除以 (x+y)的平方 步骤要全 30...
解: (x+y)的七次方 除以 (-x-y)的七次方 除以 (x+y)的平方 =(x+y)的7次方÷[-(x+y)]的7次方÷(x+y)的平方 =(x+y)的7次方÷[-(x+y)的7次方]÷(x+y)的平方 =-(x+y)的7次方÷(x+y)的7次方÷(x+y)的平方 =-1\/(x+y)的平方 =-1\/(x+y)²祝你学习...
分解因式 x(x-y)-y(y-x)
x(x-y)+y(y-x)=x(x-y)-y(x-y)=(x-y)(x-y)=(x-y)²明教为您解答,如若满意,请点击[满意答案];如若您有不满意之处,请指出,我一定改正!希望还您一个正确答复!祝您学业进步!