Question 714272
    Factor 2x squared -1x-1
.
{{{2x^2 - x - 1}}}
we can rewrite the middle term as:
{{{2x^2 -2x+x - 1}}}
grouping:
{{{(2x^2-2x)+ (x-1)}}}
{{{2x(x-1)+ (x-1)}}}
{{{(x-1)(2x+1)}}}