SOLUTION: Please help me solve this equation Let f(x) = 2x^2 − 8x − 7. (a) Write the quadratic in vertex form (that is y = a(x − h)^2 + k for some constants a, h, and

Algebra.Com
Question 1078497: Please help me solve this equation
Let f(x) = 2x^2 − 8x − 7.
(a) Write the quadratic in vertex form (that is y = a(x − h)^2 + k for some constants a, h, and k).
(b) Calculate the roots of the function f.
(c) Sketch the graph of f, showing all important features. (Vertex, roots, y intercept.)
(d) Solve f(x) > 0.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!

---( reworked)---

Starting from the given function,







ROOTS









--------------------------------------------------



-

Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Please help me solve this equation
Let f(x) = 2x^2 − 8x − 7.
(a) Write the quadratic in vertex form (that is y = a(x − h)^2 + k for some constants a, h, and k).
(b) Calculate the roots of the function f.
(c) Sketch the graph of f, showing all important features. (Vertex, roots, y intercept.)
(d) Solve f(x) > 0.
FYI The other person's answers are WRONG, NONSENSICAL, and should be IGNORED. 

The correct answer for a) is: 

You have to try to figure out the rest on your own, but whatever you do, IGNORE the other person's RIDICULOUS answers. 

RELATED QUESTIONS


Let f(x) = 2x^2 − 8x − 7.
 Write the quadratic in vertex form 
(that is y... (answered by josgarithmetic)

1. Let f(x) = 2x^2 − 8x − 7. 
Write the quadratic in vertex form (that is y... (answered by stanbon)

1. Let f(x) = 2x^2 − 8x − 7. 
What is the quadratic in vertex form that is y  (answered by josgarithmetic)

 Let f(x) = 2x^2 − 8x − 7. 
What is the quadratic in vertex form that is y =  (answered by stanbon)

i really need help with this. i thought to have an equation in vertex form and to find... (answered by Mathtut)

f(x) = −1/2x^2 − 2x + 5

is the function of a quadratic function.

1)... (answered by ewatrrr)

 Please help me solve this equation:

1. Determine dy/dx for y = x√x(5x^2 −  (answered by Fombitz)

Write the quadratic function in standard form.
f(x) = −x^2 − 4x + 3

 (answered by josgarithmetic)

 Which equation is a quadratic equation?

 5x + y = −2(x + 5)

 3x3 − y =  (answered by unlockmath)