SOLUTION: 6x^2-x-5 solve for x

Algebra.Com
Question 165720: 6x^2-x-5 solve for x
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
I assume that the equation is really

Solved by pluggable solver: Quadratic Formula
Let's use the quadratic formula to solve for x:


Starting with the general quadratic





the general solution using the quadratic equation is:







So lets solve ( notice , , and )





Plug in a=6, b=-1, and c=-5




Negate -1 to get 1




Square -1 to get 1 (note: remember when you square -1, you must square the negative as well. This is because .)




Multiply to get




Combine like terms in the radicand (everything under the square root)




Simplify the square root (note: If you need help with simplifying the square root, check out this solver)




Multiply 2 and 6 to get 12


So now the expression breaks down into two parts


or


Lets look at the first part:





Add the terms in the numerator

Divide


So one answer is






Now lets look at the second part:





Subtract the terms in the numerator

Divide


So another answer is




So our solutions are:

or


RELATED QUESTIONS

Solve for x:... (answered by checkley71)
Solve for x... (answered by fractalier)
solve for x:... (answered by stanbon)
solve... (answered by jojo14344)
Solve for... (answered by Alan3354)
solve for x.... (answered by swincher4391)
solve for x 6x+1/5=65 (answered by RAY100)
Solve for x... (answered by Timnewman,MathTherapy)
solve for x... (answered by Fombitz)