Cho A = 10x 3 y 2 ; B = -2x 4 y 2 ; C= -8x 5 y 2 Chứng minh : Ax 2 + Bx +C = 0

Question

Cho A = 10x 3 y 2 ; B = -2x 4 y 2 ; C= -8x 5 y 2
Chứng minh : Ax 2 + Bx +C = 0

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Maya 1 năm 2021-12-06T20:20:58+00:00 1 Answers 4 views 0

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    2021-12-06T20:22:43+00:00

    Ta có

    $A x^2 + Bx + C = 10x^3 y^2 . x^2 + (-2x^4 y^2).x + (-8x^5 y^2) = 10x^5 y^2 – 2x^5 y^2 – 8x^5 y^2 = 0$

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