Post a New Question

College Algebra

posted by .

I could not figure out the answer to this Problem:

The quadratic function
f(x)= -2x^2 =4x +3 can be used to solve the following inequality:
-2x^2 -4x < -3

First use the Quadratic Formula to find the x-intercept of f.

This problem asks that the answer be separated by commas and rounded to nearest tenth

Also solution set is requested and put in interval notation and numbers rounded to nearest tenth

My answers to this problem where incorrect The x-intercepts I found were 2.4,5.8
and the solution set I had is: (-infinity, 2.4] union [5.8,infinity)

  • College Algebra -

    solving the quadratic
    -2x^2 - 4x + 3 = 0 or
    2x^2 + 4x - 3 = 0 yields
    x = (-4 ± √40)/4
    x = .58 or -2.58 not your answers.

    so x < -2.58 OR x > .58

    round off and express in the form they want.

  • College Algebra -

    So once I have to convert sqrt of 40 and solve from there?

  • College Algebra -

    Thank you so much for your help.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question