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為了電腦輸入方便,我們不妨用雙引號(“)表示二次方,用乘方符號(^)表示三次方,如果是四次方,還應該使用括弧,(x^4)看起來方便一些 (x^4)(x + 1)“+ 4(x^3)(y^2)+ 4(y^4) 題目是這樣嗎?
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