SOLUTION: Foe the following equation, state the value of the discriminant and then describe the nature of the solutions -19x^2-2x+7=0 ^means raising to that power which statement is

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Foe the following equation, state the value of the discriminant and then describe the nature of the solutions -19x^2-2x+7=0 ^means raising to that power which statement is      Log On


   

Question 474242: Foe the following equation, state the value of the discriminant and then describe the nature of the solutions
-19x^2-2x+7=0
^means raising to that power
which statement is correct?
a) the equation has 2 imaginary solutions
b) the equation has 2 real solutions
c) the equation has one real solution
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
When the quadratic has the form
+ax%5E2+%2B+bx+%2B+c+, the discriminant is
+b%5E2+-+4%2Aa%2Ac+
+-19x%5E2-2x%2B7=0+
+b+=+-2+
+a+=+-19+
+c+=+7+
+b%5E2+-+4%2Aa%2Ac+=+%28-2%29%5E2+-+4%2A%28-19%29%2A7+
+b%5E2+-+4%2Aa%2Ac+=+4+%2B+532+
Discriminant = 536
The equation has 2 real solutions