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求多项式的零点练习
求多项式的零点 · 1–12
求出所有零点。
1.p(x) = (x − 1)(x − 2)(x − 3)
2.p(x) = −(x + 2)(x − 5)(x − 2)
4.p(x) = 2(x − 1)(x − 3)x
6.p(x) = 2(x + 3)(x − 3)(x − 6)
7.p(x) = −(x − 1)(x − 5)(x − 1)
8.p(x) = (x + 6)(x + 2)(x − 2)
9.p(x) = (x − 4)(x + 2)(x + 3)
10.p(x) = 2(x + 4)(x + 2)(x + 3)
11.p(x) = (x + 3)x(x + 4)
12.p(x) = (x + 4)(x + 4)(x + 4)
答案 — 求多项式的零点练习
求多项式的零点
5.x = 0 或 x = −1 或 x = −4
8.x = 2 或 x = −2 或 x = −6
9.x = 4 或 x = −2 或 x = −3
10.x = −2 或 x = −3 或 x = −4
11.x = 0 或 x = −3 或 x = −4
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