How do you solve by completing the square: x^2 + 6x - 5 = 0?

1 Answer
maganbhai P.
Mar 4, 2018

x=-3+sqrt14orx=-3-sqrt14

Explanation:

x^2+6x-5=0
rArrx^2+6x+color(red)(9-14)=0
rArr(x^2+6x+9)=14
rArrcolor(blue)((x+3)^2=(sqrt14)^2)
rArrx+3=+-sqrt14
rArrx+3=sqrt14orx+3=-sqrt14
rArrx=-3+sqrt14orx=-3-sqrt14

Related questions
See all questions in Completing the Square
Impact of this question
19326 views around the world
You can reuse this answer
Creative Commons License