Question

simplify is possible 3 8
----- + -------------
k+7 k squared -49

Answer 1

The common denominator is (k^2-49)

3(k-7)/(k^2-49) + 8(k^2-49)

3k-21/(k^2-49) +8/(k^2-49) Adding
3k-21+8 /(k^2-49) =(3k-13)/(k^2-49)

You could factor the denominator further to (k+7)(k-7) but it is debatable whether that really makes it any simpler: (3k-13)/(k+7)(k-7)

Did you follow with understanding? Did you work it out already. It isn't really hard, just do neat work and keep on track!

Answer 2

Ya i understand this now thanks!