anybody know how to factorise this equasion?
k2L2-mnL-k2L+mn
k2and L2 shold read K and L squared but dont know how to write this on the computer
$\displaystyle k^2L^2 - mnL - k^2L + mn$
begin by grouping terms that have things in common
$\displaystyle k^2L^2 - k^2L + mn - mnL$
factor out the like terms by groups
$\displaystyle k^2L(L - 1) + mn(1 - L)$
factor out -1 from (1 - L)
$\displaystyle k^2L(L - 1) - mn(L - 1)$
now what?
you could type k^2 and L^2 respectivelyk2and L2 shold read K and L squared but dont know how to write this on the computer