How do you combine $(- 16 x^{2} + 13 x - 13) - (- 19 x^{2} - 11 x + 12)$ $(-16x^2 + 13x - 13) - (-19x^2 - 11x + 12)$ ?

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How do you combine $(- 16 x^{2} + 13 x - 13) - (- 19 x^{2} - 11 x + 12)$ $(-16x^2 + 13x - 13) - (-19x^2 - 11x + 12)$ ?

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Answer 1 · 2015-06-06T22:43:12

Because of the $-$ $-$ sign you reverse all the signs in the second term (and of course you change the $-$ $-$ into a $+$ $+$ :

$= (- 16 x^{2} + 13 x - 13) + (19 x^{2} + 11 x - 12)$ $=(-16x^2+13x-13)+(19x^2+11x-12)$

Now get rid of the brackets and add like terms:
$= - 16 x^{2} + 13 x - 13 + 19 x^{2} + 11 x - 12$ $=-16x^2+13x-13+19x^2+11x-12$
$= (- 16 x^{2} + 19 x^{2}) + (13 x + 11 x) + (- 13 - 12)$ $=(-16x^2+19x^2)+(13x+11x)+(-13-12)$

$= 3 x^{2} + 24 x - 25$ $=3x^2+24x-25$

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How do you combine $(- 16 x^{2} + 13 x - 13) - (- 19 x^{2} - 11 x + 12)$ $(-16x^2 + 13x - 13) - (-19x^2 - 11x + 12)$ ?

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How do you combine (−16x2+13x−13)−(−19x2−11x+12)(-16x^2 + 13x - 13) - (-19x^2 - 11x + 12)?

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How do you combine $(- 16 x^{2} + 13 x - 13) - (- 19 x^{2} - 11 x + 12)$ $(-16x^2 + 13x - 13) - (-19x^2 - 11x + 12)$ ?