(x^2+y^2)*(x-y)^2+(xy)^2
=(x^2+y^2)(x^2-2xy+y^2)+(xy)^2
=(x^2+y^2)^2-2xy(x^2+y^2)+(xy)^2
=(x^2+y^2-xy)^2
中學(xué)的因式分解問題—
中學(xué)的因式分解問題—
(x^2+y^2)*(x-y)^2+(xy)^2
(x^2+y^2)*(x-y)^2+(xy)^2
數(shù)學(xué)人氣:995 ℃時(shí)間:2020-05-30 09:57:13
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