SOLUTION: (a). write the value of the discriminant of each equation. (b). Then use it to decide how many different real number roots the equation has.(do not solve.) 3x to the second powe

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: (a). write the value of the discriminant of each equation. (b). Then use it to decide how many different real number roots the equation has.(do not solve.) 3x to the second powe      Log On


   

Question 42803: (a). write the value of the discriminant of each equation. (b). Then use it to decide how many different real number roots the equation has.(do not solve.)
3x to the second power - x - 1 = 0
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
For 3x^2 - x - 1 = 0
the discriminant b^2 - 4ac =
1 + 12 = 13
which means there are two conjugate real roots