SOLUTION: I started on this problem but can't seem to get any further than this point. I can't figure out what I'm doing wrong. If you can help I would really appreciate it. 3=7x-4x^2

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: I started on this problem but can't seem to get any further than this point. I can't figure out what I'm doing wrong. If you can help I would really appreciate it. 3=7x-4x^2       Log On


   

Question 66082This question is from textbook beginning algebra
: I started on this problem but can't seem to get any further than this point. I can't figure out what I'm doing wrong. If you can help I would really appreciate it.
3=7x-4x^2
3-7x+4=0
a=3,b=-7,c=4
Thank you This question is from textbook beginning algebra

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
3=7x-4x^2
You lost your x^2
4x%5E2-7x%2B3=7x-7x-4x%5E2%2B4x%5E2
4x%5E2-7x%2B3=0
a=4, b=-7, and c=3
It looks like you want to use the quadratic formula, but this could have been solved through factoring. I'm going to follow your lead and use the quadratic formula.
The quadratic formula is: highlight%28x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a%29
x=%28-%28-7%29%2B-sqrt%28%28-7%29%5E2-4%284%29%283%29%29%29%2F%282%284%29%29
x=%287%2B-sqrt%2849-48%29%29%2F8
x=%287%2B-sqrt%281%29%29%2F8
x=%287-1%29%2F8 or x=%287%2B1%29%2F8
x=6%2F8 or x=8%2F8
highlight%28x=3%2F4%29 or highlight%28x=1%29
Happy Calculating!!!!