6x-3y=-3,5x-9y=4
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
y=5;x=14;y=((x=3*y,x+6),x-1); printf(''x=%d,y=%d'
解方程组4x+3y=3,3x+5y=-6,求x,
解方程组:{4x+6y=9,2x+3y=5
x²+y²-4x+6y+13=0,求(3x+y)²-3(3x+y)(x+y)-(x-3y)
已知x,y是实数,根号下3x+4已知实数x、y满足 根号下3x+4 +y²-6y+9=0,且axy-3x=y,
已知x和y满足x+3y+|3x-y|=19,2x+y=6,求x,y的值
已知x,y为实数,且2(x+2y)=x²+y²+5求代数式3x-4y分之x²+y²
3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y