How do you find the sum of $(x+3)$ and $(-x-4)$ ?

$phi$

Dec 4, 2016

$-1$

$color(blue)((x+3)+(-x-4)$

Remove the brackets

$rarrx+3-x-4$

Add the $x's$

$rarrcolor(red)(x)+3color(red)(-x)-4$

$rarr3-4$

$color(green)(rArr-1$

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How do you find the sum of (x+3)(x+3) and (-x-4)(-x-4)?