How do you solve #x² - 2x = 15# by completing the square?
3 Answers
Explanation:
Although there is a better method, completing the square method is as such:
rearrange the formula to equate 0:
Rearrange to get:
Square root on both sides to get:
Therefore adding 1 to both sides gives us either:
Explanation:
As
Your value of
Now solve for
Therefore,