15.0k views
1 vote
9th grade algebra 1 help?

What number would you add to complete the square?

x² + 12x

User PeakJi
by
6.7k points

1 Answer

4 votes
In equations like
ax^2 + bx + c^2
if you want to make it square, b has to be equal to 2ac

Therefore in this equation c has to be 6 and the number you have to add is 36
User Krx
by
6.9k points