2x^2-5x-12 = 0
2(x^2 - 5/2) = 12
x^2 - 5/2 = 6
x^2 - 5/2 + (5/4)^2 = 6 + (5/4)^2
(x - 5/4)^2 = 6 + 25/16 = 121/16
x - 5/4 = ±11/4
x = 5/4 ± 11/4
x = 4 or -3/2
2x^2-5x-12=0
solve by completing the square.
please explain how it's sovled.
4 answers
In google type :
quadratic equation online
When you see list of results click on :
Free Online Quadratic Equation Solver: Solve by Quadratic Formula
When page be open click on :
Solve by Completing the Square
then type :
2x^2-5x-12=0
and click option :
solve it!
You will see solution step by step
quadratic equation online
When you see list of results click on :
Free Online Quadratic Equation Solver: Solve by Quadratic Formula
When page be open click on :
Solve by Completing the Square
then type :
2x^2-5x-12=0
and click option :
solve it!
You will see solution step by step
this is so helpful
. 2x² + 5x = 12 *