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dianadaily
2 năm trước
bài 1:cho đa thức a, P(x) = $x^{4}$ + 2$x^{2}$ + 1 b, Q(x) = $x^{4}$ + 4$x^{3}$ + 2$x^{2}$ - 4x +1 tính : P(-1); P($\frac{1}{2}$); Q(-2); Q(1) bài 2: cho hai đa thức P(x) = -3$x^{2}$ + x + 1 và Q(x) = -3 $x^{2}$ + 2x - 2 a, Tính P(-1) và Q(-$\frac{1}{2}$) b, so sánh P(3) và Q(3) giúp mình toán đi 2 bài này khó quá
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