Solve the following equation algebraically:

-5x2 - 4x = - 9 

x = Give ONE solution at a time!   ?

Hints:

  1. You can solve quadratic equations with the p-q formula. Swedish National Test Formula Collection
    I hope you know that x^2 is the same as ? Otherwise check "Skriva Ma på dator"
    (there is also described how you can write characters like ^ = * / < > ( ) with a keyboard)
  2. -5x2 - 4x = - 9 is not in the right form:
    x² + px + q=0, What would make the term not have - 5 as coefficient?

Another hint?