Hello DrBob222

Regarding the answer you gave me thank you very much. However when you expand the denominator, I don't get -0.14 but I get -0.28. I get that because when I first expand I get 0.0049 - 0.14x - 0.14x + 4x^2. So when I simplify that I get -0.28x. So could you clarify that part for me thanks

2 answers

No. You're right and I made an error. I multiplied but didn't double it as I should have done. That means that my estimated answer I gave you last night is slightly off. Thanks for letting me know.
So all I have to do now is cross multiply and solve for x right? Also when that happens, how do I factor the x^3? What do I use?