abx 2+bxy-axy-y 2-标签分类-2025-12-10 20:56
必应
abx 2+ ay-b x-y,
ax 2+bxy+cy 2 1,
abx 2+ b 2-ac x-bc 0,
x 2-abx+1/2 a+b 0,
ax 2+bxy+cy 2+dx+ey 1,
ab x2+y2 + xy a2+b2,
ax 2+bxy+cy 2+dx+ey+f 0,
y ax 2 + bx + c,
ax+by 2 + bx-ay 2,
bx+ay a2+b2 ax-by 0,
y ax2+bx 3a+b 0 a+b 0,
y ax 2 bx c meaning