1.已知(A+21)^=1512910,则(A+11)(A+31)=?2.(x+y-z)^=?(化颍?3.(X+1)^(X-1)^=?4.已知a+b=3,ab=-12,求下列各式的直 5.a^+b^=?2.a^-ab+b^
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![1.已知(A+21)^=1512910,则(A+11)(A+31)=?2.(x+y-z)^=?(化颍?3.(X+1)^(X-1)^=?4.已知a+b=3,ab=-12,求下列各式的直 5.a^+b^=?2.a^-ab+b^](/uploads/image/z/1057093-61-3.jpg?t=1.%E5%B7%B2%E7%9F%A5%EF%BC%88A%2B21%29%5E%3D1512910%2C%E5%88%99%EF%BC%88A%2B11%29%28A%2B31%29%3D%3F2.%28x%2By-z%29%5E%3D%3F%28%E5%8C%96%E9%A2%8D%3F3.%EF%BC%88X%2B1%EF%BC%89%5E%28X-1%29%5E%3D%3F4.%E5%B7%B2%E7%9F%A5a%2Bb%3D3%2Cab%3D-12%2C%E6%B1%82%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E7%9A%84%E7%9B%B4+5.a%5E%2Bb%5E%3D%3F2.a%5E-ab%2Bb%5E)
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