SOLUTION: Find the value of k so that the equation {{{ 2x^2+kx-15=0 }}} will have one root equal to 3.

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Find the value of k so that the equation {{{ 2x^2+kx-15=0 }}} will have one root equal to 3.      Log On


   

Question 206099: Find the value of k so that the equation +2x%5E2%2Bkx-15=0+ will have one root equal to 3.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Simply plug in x=3, simplify, and solve for 'k'. Because you plug in a value for 'x', there will only be one variable left to solve for.