x²(a-b)+y²(b-a)
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![x²(a-b)+y²(b-a)](/uploads/image/z/13307862-30-2.jpg?t=x%26%23178%3B%28a-b%29%2By%26%23178%3B%28b-a%29)
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x²(a-b)+y²(b-a)
x²(a-b)+y²(b-a)
x²(a-b)+y²(b-a)
解
x²(a-b)+y²(b-a)
=x²(a-b)-y²(a-b)
=(a-b)(x²-y²)
=(a-b)(x-y)(x+y)
x²(a-b)+y²(b-a)
=x^2(a-b)-y^2(a-b)
=(a-b)(x^2-y^2)
=(a-b)(x+y)(x-y)
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