What method(s) would you choose to solve the equation:

x2 + 2x - 6 = 0

A. Square roots; there is no x-term.
B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large.
C. Factoring; the equation is easily factored.
D. Quadratic formula, completing the square or graphing; the coefficient of x2-term is 1, but the equation cannot be factored.

Question

What method(s) would you choose to solve the equation: 

x2 + 2x - 6 = 0

  A. Square roots; there is no x-term. 	
  B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large. 	
  C. Factoring; the equation is easily factored. 	
  D. Quadratic formula, completing the square or graphing; the coefficient of x2-term is 1, but the equation cannot be factored.

anonymous · Answer

Factoring. C. :)

anonymous · Answer

You cannot use the quadratic formula because there is no square roots. ex: 2x^2. Which also rules out a, of course.  :)