分解因式:x4+4 x4+4=x4+4x2+4-4x2=(x2+2)2-4x2 =(x2+2x+2)(x2-2x+2)以上解法中,在x4+4的中间加上一项,使得三项组成一个完全平方式,为了使这个式子的值保持与x4+4的值保持不变,必须减去同样的一
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![分解因式:x4+4 x4+4=x4+4x2+4-4x2=(x2+2)2-4x2 =(x2+2x+2)(x2-2x+2)以上解法中,在x4+4的中间加上一项,使得三项组成一个完全平方式,为了使这个式子的值保持与x4+4的值保持不变,必须减去同样的一](/uploads/image/z/3694103-71-3.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9Ax4%2B4+x4%2B4%3Dx4%2B4x2%2B4-4x2%3D%EF%BC%88x2%2B2%EF%BC%892-4x2+%3D%EF%BC%88x2%2B2x%2B2%EF%BC%89%EF%BC%88x2-2x%2B2%EF%BC%89%E4%BB%A5%E4%B8%8A%E8%A7%A3%E6%B3%95%E4%B8%AD%2C%E5%9C%A8x4%2B4%E7%9A%84%E4%B8%AD%E9%97%B4%E5%8A%A0%E4%B8%8A%E4%B8%80%E9%A1%B9%2C%E4%BD%BF%E5%BE%97%E4%B8%89%E9%A1%B9%E7%BB%84%E6%88%90%E4%B8%80%E4%B8%AA%E5%AE%8C%E5%85%A8%E5%B9%B3%E6%96%B9%E5%BC%8F%2C%E4%B8%BA%E4%BA%86%E4%BD%BF%E8%BF%99%E4%B8%AA%E5%BC%8F%E5%AD%90%E7%9A%84%E5%80%BC%E4%BF%9D%E6%8C%81%E4%B8%8Ex4%2B4%E7%9A%84%E5%80%BC%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%2C%E5%BF%85%E9%A1%BB%E5%87%8F%E5%8E%BB%E5%90%8C%E6%A0%B7%E7%9A%84%E4%B8%80)
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