2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)
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![2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)](/uploads/image/z/7172868-12-8.jpg?t=2%28ax%2Bby%29%2A%28by-ax%29-%28ax-by%29%5E2-%28by-ax%29%5E2%2C%E5%85%B6%E4%B8%ADa%3D-3%2Cb%3D1%2F2+%28%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%EF%BC%89)
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2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)
2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)
2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)
设ax+by=A,by-ax=B
∴2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2
=2AB-A^2-B^2
=-(A-B)^2
=-[(ax+by)-(by-ax)]^2
=-(2ax)^2
=-[2*(-3)x]^2
=-36x^2
2(ax+by-ax)-(ax+by)^2-(by-ax)^2 其中a=-3 b=0.52(ax+by)(by-ax)-(ax+by)^2-(by-ax)^2
2(ax+by)*(by-ax)-(ax+by)²-(by-ax)²,其中a=-3,x=2分之1
ax+by-ay-bx
ax-bx-ay+by
xoy平面上,ax+by=c,ax+by>c,ax+by》c,ax+by
(ax+by)^2+(ay-bx)^2+2(ax+by)(ay-by)
ax+bx=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+bx^5.
ax+bx=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+bx^5.
因式分解:(ax-by)^2+(ay+bx)^2
2ax+2ay-bx-by因式分解
(ax+by)^2+(bx-ay)^2因式分解
(ax+by)^2+(bx-ay)^2
(ax+by)^2-(ay+bx)^2
(ax+by)^2+(bx-ay)^2
ax+2bx+ay+2by能化简吗?
计算:(-ax by)(bx^2-ay^2).
2(ax+by)*(by-ax)-(ax-by)^2-(by-ax)^2,其中a=-3,b=1/2 (先化简,再求值)
求代数式2(ax+by)(by-ax)-(ax+by)²-(ax-by)²的值,其中a=-4,a-x=-1.