Quite simple
Algebra
Level
3
What is the sum of all possible solutions for x of the equation x ( x - k ) = k + 1?
k+1
0
1
2k-1
k
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Moderator note:
Simple standard approach.
Using vieta's, the sum of roots of quadratic of form a x 2 + b x + c is − a b