根据条件求出自然数x和y:1)x,y满足x²+xy=35;2)x,y满足x²-y²=45
分别根据所给条件求出自然数x和y的值(1)x,y满足x²+xy=35;(2)x,y满足x²-y&su
已知xy=8满足x²y-xy²-x+y=56,求x²+y²
1-x²+2xy-y²
1、已知xy满足(x+1)²+1y+21=0试求-2xy·5x²y+(0.5x²y&sup
已知实数x,y满足x²+4y²=4.求f(x,y)=x²+2xy+4y²+x+2
已知x,y满足x²+y²-4x-6y+13=0,求(-y/x³)³÷(-1/xy
计算:(1).(-2xy²)*(3x²y)²
x²-4y²/x²+2xy+y²÷x+2y/2x²+2xy
已知,整数x、y满足x²+xy+2y²=7,求x、y的值.
分式 已知y-2x=0(x≠0且y≠0),求代数式(x²-y²)(x²-xy+y²
x³y³-x²y²-xy+1
3y/2x+2y+2xy/x²+xy 2x/x²-64y²-1/x-8y (1/a+1/b