Candykat86 Candykat86

09-02-2018
Mathematics

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Simplify the polynomial

(2x^3 + x^2 - 4x) - (9x^3 + - 3x^2)

A) 11x^3 - 2x^2 - 4x
B) -7x^3 +4x^2 - 4x
C) -2x^3 - 2x^2 - 4x
D) -7x^3 - 4x^2 - 4x

Respuesta :

26-07-2018

[tex] (2x^3 + x^2 - 4x) - (9x^3 + - 3x^2)=2x^3+x^2-4x-9x^3+3x^2\\\\=(2x^3-9x^3)+(x^2+3x^2)-4x=-7x^3+4x^2-4x [/tex]

Answer: B) -7x^3 +4x^2 - 4x

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