SOLUTION: Solve by the Quadratic Formula. 3x^2-2x-7=0

Algebra.Com
Question 600662: Solve by the Quadratic Formula.
3x^2-2x-7=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 .


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


or Break up the expression.


or Reduce


So the solutions are or

RELATED QUESTIONS

Solve by using the quadratic formula 2x = 3x^2 -... (answered by stanbon)
(((Sove 3x^2 -2x +4 = 0 by the quadratic... (answered by ikdeep)
solve using the quadratic formula... (answered by Edwin McCravy)
30.) Solve each equation by using the quadratic formula -3x^2-2x-5=0 (answered by checkley77)
Solve each equation by using the quadratic formula. 30. -3x^2 - 2x - 5 =... (answered by jim_thompson5910)
how do you solve this by using the quadratic equation using the quadratic formula.... (answered by cleomenius)
solve by the quadratic formula:... (answered by ewatrrr)
Solve the quadratic equation using the Quadratic Formula: 3x^2-2x-2=0 (answered by jim_thompson5910)
Solve by using the quadratic formula. Show complete solutions. 2x^2 + 9x - 7 = 0 (answered by jim_thompson5910)