Question 683782
2m squared minus km minus 11.

{{{2m^2-km-11}}}


Use the formula method to find the values of x

compare with the equation {{{am^2+bm+c}}}

a=2, b=-k, c=-11

{{{b^2-4ac= k^2-(4)(2)(-11)}}}

=k^2+88

{{{x=(-b+-sqrt(b^2-4ac))/(2a)}}}


{{{x=(k+-sqrt(k^2+88))/4}}}
{{{x=(k/4) +-sqrt((k^2/16)+(11/2)))}}}