SOLUTION: Determine the coordinates of the vertex and the roots of the quadratic equation 15x^2-14x-8=0
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Question 362161: Determine the coordinates of the vertex and the roots of the quadratic equation 15x^2-14x-8=0
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
You have a quadratic equation. Quadratic equations do not have a vertex. The corresponding quadratic function does have a vertex. Is that what you meant?
Quadratic Function
\ =\ ax^2\ +\ bx +\ c)
The 
-coordinate of the vertex of the general quadratic function is given by 
. The 
-coordinate is simply the value of the function at that -value, that is to say: )
Quadratic Equation
To find the roots, either factor the trinomial and use the Zero Product Rule, or use the Quadratic Formula. Since your given quadratic equation does not factor over the rationals, the quadratic equation is your only choice.
Just plug in the coefficients and do the arithmetic.
John
My calculator said it, I believe it, that settles it
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