+280 I did 1. and 2., but how do i go about entering the values for 3.? Its been a while so i kind of forgot some algebra rules.
+129847
[ 3 / [(x + h) + 2] - 3/ [ x + 2] ] / h get a common denominator
[ (3 [x + 2] - 3 [ (x + h) + 2 ] ] / [ h (x + h + 2) (x + 2)] simplify
[ 3x + 6 - 3x - 3h - 6 ] / [ h (x + h + 2) (x + 2) ]
[ -3h] / [ h (x + h + 2) (x + 2) ] the "h's" cancel
[-3] / [ (x + h + 2) (x + 2) ]
Take the limit as h → 0
[-3] / [ (x + 2) ( x + 2) ] =
-3 / (x + 2)2
