(x+y)²+(x-y)²等于多少
(x-y)²(y-x)³等于多少.
(x-y)²×(y-x)³ 等于多少 解法.
(x-y)³(x-y)²(y-x)等于多少
(x-2y)³÷(2y-x)²等于多少? (-x)²×(-x)³等于多少?
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
-x+3y=5求5(X-3Y)²-8(x-3y)-5等于多少/
如果x、y为实数,且(x+2)²+根号y-2=0,则x+y等于多少
(x²-y²)(x²+y²)(xy) 等于多少
(x²y)的6次方除以(x²y)² 等于多少?
(x+y)²-16(x-y)²等于多少
4+12(x-y)+9 (x-y)²等于多少
[(x-y)²]³×[(y-x)³]的四次方等于多少?