What is $(- 3 x^{2} - 11 x + 13) - (18 x^{2} + 19 x - 8)$ $(-3x^2-11x + 13)-(18x^2 +19x-8)$ ?

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What is $(- 3 x^{2} - 11 x + 13) - (18 x^{2} + 19 x - 8)$ $(-3x^2-11x + 13)-(18x^2 +19x-8)$ ?

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Answer 1 · 2016-02-01T05:01:31

$- 21 x^{2} - 30 x + 21$ $-21x^2-30x+21$

Explanation:

This can be written as $- 3 x^{2} - 11 x + 13 + [(- 1) \times (18 x^{2} + 19 x - 8)]$ $-3x^2-11x+13 +[ (-1)xx(18x^2+19x-8)]$
$- 3 x^{2} - 11 x + 13 + (- 18 x^{2} - 19 x + 8)$ $-3x^2-11x+13+(-18x^2-19x+8)$
$(- 3 - 18) x^{2} + (- 11 - 19) x + (13 + 8)$ $(-3-18)x^2+(-11-19)x+(13+8)$
$- 21 x^{2} - 30 x + 21$ $-21x^2-30x+21$

Answer 2 · 2016-02-01T13:13:50

$(- 3 x^{2} - 11 x + 13) - (18 x^{2} + 19 x - 8)$ $(-3x^2-11x+13)-(18x^2+19x-8)$

Always remember that you must multiply your signs and write when subtracting:

$\to = (- 3 x^{2} - 11 x + 13) - 18 x^{2} - 19 x + 8$ $rarr=(-3x^2-11x+13)-18x^2-19x+8$

Remove brackets:

$\to - 3 x^{2} - 11 x + 13 - 18 x^{2} - 19 x + 8$ $rarr-3x^2-11x+13-18x^2-19x+8$

$\to - 21 x^{2} - 11 x + 13 - 19 x + 8$ $rarr-21x^2-11x+13-19x+8$

$\to - 21 x^{2} - 30 x + 13 + 8$ $rarr-21x^2-30x+13+8$

$\to = - 21 x^{2} - 30 x + 21$ $rarr=-21x^2-30x+21$ (Final answer)

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What is $(- 3 x^{2} - 11 x + 13) - (18 x^{2} + 19 x - 8)$ $(-3x^2-11x + 13)-(18x^2 +19x-8)$ ?

2 Answers

Explanation:

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Impact of this question

Science

Math

Humanities

... and beyond

What is (−3x2−11x+13)−(18x2+19x−8)(-3x^2-11x + 13)-(18x^2 +19x-8)?

2 Answers

Explanation:

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What is $(- 3 x^{2} - 11 x + 13) - (18 x^{2} + 19 x - 8)$ $(-3x^2-11x + 13)-(18x^2 +19x-8)$ ?