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25-08-2018
Mathematics

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Simplify: (3x^2 + 4x - 3) - (4x^2 - 3x + 2)

A) x^2 + 7x - 5

B) 7x^2 + x - 1

C) -7x^2 + x - 1

D) -x^2 + 7x - 5

Respuesta :

25-08-2018

[tex] (3x^2 + 4x - 3) - (4x^2 - 3x + 2)\\\\=3x^2 + 4x - 3 -4x^2+3x-2\\\\=(3x^2-4x^2)+(4x+3x)+(-3-2)\\\\=-x^2+7x-5\to D) [/tex]

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