SOLUTION: need help solving x2 − 2x − 13 = 0 using indian method

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: need help solving x2 − 2x − 13 = 0 using indian method      Log On


   

Question 334223: need help solving x2 − 2x − 13 = 0 using indian method
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Put constant term on the right:



Multiply by 4 times the lead coefficient:



Add the original first degree term coefficient squared.



Factor the perfect square on the left:



Take the square root of both sides (positive and negative)



Add opposite of the new constant term on the left:



Multiply by the reciprocal of the coefficient on :



And simplify:



Fascinating! I wonder what happens when you apply this method to the general quadratic.

















Would you look at that! The quadratic formula.

John

My calculator said it, I believe it, that settles it