SOLUTION: x^2=16x= -3 what value should be added to both sides of equation? 3? i think...

Algebra ->  Rational-functions -> SOLUTION: x^2=16x= -3 what value should be added to both sides of equation? 3? i think...      Log On


   

Question 679223: x^2=16x= -3
what value should be added to both sides of equation?
3? i think...
Found 2 solutions by Alan3354, ReadingBoosters:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x^2=16x= -3
-------
Too many equal signs.

Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Starting with
x%5E2%2B16x+=+-3
Yes, add 3 to both sides.
x%5E2%2B16x%2B3=0
...
If you are completing the square, then
take half of b and square it.
In this case, b is 16, half of 16 is 8 and 8 squared is 64.
Add 64 to both sides.
...
x%5E2+%2B+16x+%2B+64+=+-3+%2B+64
...
%28x%2B8%29%5E2+=+61
...
sqrt%28x%2B8%29%5E2 = +/- sqrt%2861%29
...
x + 8 = +/- sqrt%2861%29
x = -8%2B-sqrt%2861%29
.....................
Delighted to help; feel free to email if you have further questions.
HomeworkHelpers@readingboosters.com
-Reading Boosters
Website: www.MyHomeworkAnswers.com
Wanting for others what we want for ourselves.