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toannguyenthe14
2 năm trước
bài 1 : cho 2 đơn thức (-2x^2y)^2 * (3xy^2z)^2 a) tính tích hai đơn thức trên b) tìm bậc , nêu phần hệ số , phần biến của đơn thức tích vừa tìm đc. bài 2 : cho 2 đa thức P(x)=5x^5+3x-4x^4-2x^3+6+4x^2 Q(x)=2x^4-x+3x^2-2x^3+1/4-x^5 a) sắp xếp các hạng tử của mỗi đa thức theo lũy thừa giảm của biến b) tính P(x)+Q(x); P(x)-Q(x) c) tính giá trị của P(x)+Q(x) khi |x|=1 mọi người giúp mình nha .
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