Question

Where am I going wrong with trying to find the limit of the following problem?

Answer 1

lim x-->1 (x^4-1)/(x-1)

=lim x-->1 (x^2 -1)(x^2 +1) / (x-1)

=lim x -->1 ( x-1)(x+1)(x^2 +1) / ( x-1)

=lim x ---> 1 (x+1)(x^2 +1)

= (1+1)(1^2 +1)

= 2 * 2

= 4

Answer 2

that is the first limit

Answer 3

lim x-->1 (x^4-1)/(x-1)

=lim x-->1 (x^2 -1)(x^2 +1) / (x-1)

=lim x -->1 ( x-1)(x+1)(x^2 +1) / ( x-1)

=lim x ---> 1 (x+1)(x^2 +1)

= (1+1)(1^2 +1)

= 2 * 2

= 4

Answer 4

this problem is the 1st problem