When $x^{2} + 3 x - 4$ $x^2 +3x-4$ is subtracted from $x^{3} + 3 x^{2} - 2 x$ $x^ 3+3x^2 -2x$ what is the difference?

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When $x^{2} + 3 x - 4$ $x^2 +3x-4$ is subtracted from $x^{3} + 3 x^{2} - 2 x$ $x^ 3+3x^2 -2x$ what is the difference?

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Answer 1 · 2016-11-25T07:10:35

$x^{3} + 2 x^{2} - 5 x + 4$ $x^3+2x^2-5x+4$

Explanation:

To find the difference, write the equation as:

$(x^{3} + 3 x^{2} - 2 x) - (x^{2} + 3 x - 4)$ $(x^3+3x^2-2x)-(x^2+3x-4)$

Open the brackets, changing the sign according to the norm (multiplication of two negatives gives a positive, and of a negative and a positive gives a negative).

$x^{3} + 3 x^{2} - 2 x - x^{2} - 3 x + 4$ $x^3+3x^2-2x-x^2-3x+4$

Group the like terms.

$x^{3} + 3 x^{2} - x^{2} - 2 x - 3 x + 4$ $x^3+3x^2-x^2-2x-3x+4$

Combine like terms, taking note of the appropriate signs.

$x^{3} + 2 x^{2} - 5 x + 4$ $x^3+2x^2-5x+4$

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When $x^{2} + 3 x - 4$ $x^2 +3x-4$ is subtracted from $x^{3} + 3 x^{2} - 2 x$ $x^ 3+3x^2 -2x$ what is the difference?

1 Answer

Explanation:

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When x2+3x−4x^2 +3x-4 is subtracted from x3+3x2−2xx^ 3+3x^2 -2x what is the difference?

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Explanation:

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When $x^{2} + 3 x - 4$ $x^2 +3x-4$ is subtracted from $x^{3} + 3 x^{2} - 2 x$ $x^ 3+3x^2 -2x$ what is the difference?