Calculus 1 Homework Help

[srnxfalcon]

I'm stuck on this one homework question,

Evaluate the limit, if it exists.

limit as X approaches 4
X2 – 4x
X2 – 3x -4

As much as I'm tempted to say that 0/0 means the limit doesn't exist, I doubt it's that easy, maybe factoring it or something would help.

Any help would be greatly appreaciated

 

[Loren]

Why don't you factor it and see what happens?

 

[srnxfalcon]

Of course.

As much as I'd dislike to admit it, being a lazy senior gave me the perfect opertunity to NOT KNOW HOW TO DO ANYTHING.

I just need a good example to build off of once again.


If someone would be so kind =\

 

[srnxfalcon]

also those 2s are squares =\

my bad.

 

[skeeter]

for the numerator, x[sup:1u33wll7]2[/sup:1u33wll7]-4x, use the first rule of factoring ... factor out anything each term has in common.

for the denominator, go review a lesson ...

http://www.purplemath.com/modules/factquad.htm

 

[srnxfalcon]

so, with x-[sup:27rpqioc]2[/sup:27rpqioc]- 4x...

Aw, this is basic stuff too.