SOLUTION: If one of the roots of the equation {{{ x^2+kx=6 }}} is 2, what is the value of k?

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Question 941192: If one of the roots of the equation +x%5E2%2Bkx=6+ is 2, what is the value of k?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
If one of the roots of the equation +x%5E2%2Bkx=6+ is 2, means x=2
plug it in +x%5E2%2Bkx=6+ and find the value of k
+2%5E2%2Bk%2A2=6+
+4%2B2k=6+
+2k=6-4+
+2k=2+
+highlight%28k=1%29+
so, your equation is:+x%5E2%2Bx=6+


+graph%28+600%2C+600%2C+-10%2C10%2C+-10%2C+10%2C+x%5E2%2Bx-6%29+
as you can see from the graph, one root is 2 and other one is -3