In general, if we have then
Thus, the first answer choice is correct.
so my equation is x^2-30x=-125. i already completed the square but what does it mean when i have to add (b/2)^2
1 answer:
You might be interested in
First of all, we can simply the first and second equations by and
, respectively, to get
If we subtract the third equation from the first, we already figure out that . The system becomes
so we know as well. Let's plug the values for
and
in any of the three equations to get
So, the solution is ,
,