Question

Estimate the limit numerically.

lim
x→−2

x2 + 4x + 4
x + 2

Answer 1

x2 + 4x + 4
--------------
x + 2

I plugged in -2 to the equation and the fraction contains a zero on the bottom, so I typed in does not exist, but it says it is wrong

Answer 2

It's not so simple, you must first factor out the x + 2 from the top and bottom. Which will give you (x+2)(x+2)/(x+2). Factoring out will give you (x+2)/1 which then the limit would = 0.

Answer 3

Estimate numerically means use values CLOSE to -2, not -2 itself!

Answer 4

Nothing is closer to -2 than -2, but use whatever. -1.9?