三道关于因式分解的题.1) (ax+by)+(bx-ay)^22) (2x+3y-3)(2x+3y+7)+163) 已知(x^2+y^2)(x^2+5+y^2)-24=0 ,求x^2+y^2的值不好意思。第一题是忘了平方。应该是(ax+by)^2+(bx-ay)^2
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![三道关于因式分解的题.1) (ax+by)+(bx-ay)^22) (2x+3y-3)(2x+3y+7)+163) 已知(x^2+y^2)(x^2+5+y^2)-24=0 ,求x^2+y^2的值不好意思。第一题是忘了平方。应该是(ax+by)^2+(bx-ay)^2](/uploads/image/z/4511126-38-6.jpg?t=%E4%B8%89%E9%81%93%E5%85%B3%E4%BA%8E%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E7%9A%84%E9%A2%98.1%EF%BC%89+%EF%BC%88ax%2Bby%29%2B%28bx-ay%29%5E22%29+%282x%2B3y-3%29%282x%2B3y%2B7%29%2B163%29+%E5%B7%B2%E7%9F%A5%EF%BC%88x%5E2%2By%5E2%29%28x%5E2%2B5%2By%5E2%29-24%3D0+%2C%E6%B1%82x%5E2%2By%5E2%E7%9A%84%E5%80%BC%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%E3%80%82%E7%AC%AC%E4%B8%80%E9%A2%98%E6%98%AF%E5%BF%98%E4%BA%86%E5%B9%B3%E6%96%B9%E3%80%82%E5%BA%94%E8%AF%A5%E6%98%AF%EF%BC%88ax%2Bby%29%5E2%2B%28bx-ay%29%5E2)
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