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

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Answer 1 · 2016-02-01T05:01:31

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

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

Answer 2 · 2016-02-01T13:13:50

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

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

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

Remove brackets:

$rarr-3x^2-11x+13-18x^2-19x+8$

$rarr-21x^2-11x+13-19x+8$

$rarr-21x^2-30x+13+8$

$rarr=-21x^2-30x+21$ (Final answer)

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