-14x^2y^2+x^4+y^4有高手帮帮忙,不会.谢了!!!!
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![-14x^2y^2+x^4+y^4有高手帮帮忙,不会.谢了!!!!](/uploads/image/z/12967489-1-9.jpg?t=-14x%5E2y%5E2%2Bx%5E4%2By%5E4%E6%9C%89%E9%AB%98%E6%89%8B%E5%B8%AE%E5%B8%AE%E5%BF%99%2C%E4%B8%8D%E4%BC%9A.%E8%B0%A2%E4%BA%86%21%21%21%21)
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-14x^2y^2+x^4+y^4有高手帮帮忙,不会.谢了!!!!
-14x^2y^2+x^4+y^4
有高手帮帮忙,不会.谢了!!!!
-14x^2y^2+x^4+y^4有高手帮帮忙,不会.谢了!!!!
-14x^2y^2+x^4+y^4=(x^2+y^2)^2-16x^2y^2=(x^2+y^2+4xy)(x^2+y^2-4xy)
原式=-14x^2y^2+x^4+y^4=x^4+y^4+2x^2y^2-16x^2y^2=(x^2+y^2)^2-(4xy)^2=(x^2+y^2+4xy)(x^2+y^2-4xy)