May I in the following cases:

1. lim_{ x=>a}(2x^{2}+3x+1)/x^{2}=2

2. lim_{ x=>a}(-2x+(2x^{2}+3x+1)/x)=3

a is infinity.

simply first divide by the denominator and then let x goes to infinity or, am I suppose first to take x out of the numerator then cancel the x(both at the numerator and denominator ) and just then let the x goes to infinity?

Thanks in advance...