x^4-18x^2+81因式分解因式分解

randy_x12022-10-04 11:39:541条回答

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tulip-影子 共回答了20个问题 | 采纳率100%
=(x^2-9)^2
=(x+3)^2(x-3)^2
1年前

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(x²-6x)(x²-6x+18)+81因式分解,
hozzh1年前2
als_man 共回答了23个问题 | 采纳率91.3%
(x²-6x)(x²-6x+18)+81
=(x²-6x+9 -9)(x²-6x+9 +9)+81
=(x²-6x+9)²-9²+81
=(x²-6x+9)²
=((x-3)²)²
=(x-3)^4

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