SOLUTION: 3x^2-5x-8=0

Algebra.Com
Question 540548: 3x^2-5x-8=0
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Start with the given equation.


Notice that the quadratic is in the form of where , , and


Let's use the quadratic formula to solve for "x":


Start with the quadratic formula


Plug in , , and


Negate to get .


Square to get .


Multiply to get


Rewrite as


Add to to get


Multiply and to get .


Take the square root of to get .


or Break up the expression.


or Combine like terms.


or Simplify.


So the solutions are or


If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim

RELATED QUESTIONS

Solve:... (answered by jim_thompson5910)
0=-3x^2+5x (answered by Linz)
3x²-5x+2=0 (answered by Alan3354)
{{{5x^2+3x-2=... (answered by robertb)
3x^2 + 5x + 2 =... (answered by jim_thompson5910)
3x^2-5x+4=0 (answered by JimboP1977)
3x^2 + 5x... (answered by NirMath4U)
3x^2-5x+4=0 (answered by Maths68)