# Math Help - Limit x->infinity

1. ## Limit x->infinity

Hello im stuck with a question
limit x->infinity $(sqrt(x^2+ax)-sqrt(x^2+bx))$
Picture show My progress

2. ## Re: Limit x->infinity

Originally Posted by Petrus
Hello im stuck with a question
limit x->infinity $(\sqrt{x^2+ax}-\sqrt{x^2+bx})$

Multiply by $\frac{\sqrt{x^2+ax}+\sqrt{x^2+bx}}{\sqrt{x^2+ax}+ \sqrt{x^2+bx}}$

3. ## Re: Limit x->infinity

Thats what i did but im doing something wrong, can u plz look at My picture i hope u can se it

4. ## Re: Limit x->infinity

Nvm solved My misstake.. The misstake i did was i thought ax/x-bx/x=0-0 i was not thinking Clear there...btw ty for the help Plato