Posted by Lee on Friday, October 22, 2010 at 5:57am.
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 xintercept 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 xintercepts I found were 2.4,5.8
and the solution set I had is: (infinity, 2.4] union [5.8,infinity)

College Algebra  Reiny, Friday, October 22, 2010 at 8:25am
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  Stacy, Friday, October 22, 2010 at 8:47am
So once I have to convert sqrt of 40 and solve from there?

College Algebra  Lee, Friday, October 22, 2010 at 9:51am
Thank you so much for your help.
Answer This Question
Related Questions
 Quadratic Functions2  Determine the standard form of a quadratic function whose...
 College Algebra  Solve the following equation in the complex number system x^4+...
 Algebra  I was given this answers to a problems I solved but I do not ...
 Algebra  I was given this answers to a problems I solved but I do not ...
 College Algebra  Let g(x) = 2x2 + bx + c be a quadratic function, defined ...
 college Algebra  Let g(x) = 2x2 + bx + c be a quadratic function, defined ...
 math,algebra  can someone help me out factor out this 0=16t^2122t+180 i have ...
 precalculus  can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6...
 algebra  which quadratic formula would be used to solve the following quadratic...
 math,correction  Problem 10 use the quadratic formula to solve each of the ...
More Related Questions