Answer to Question #129563 in Algebra for Tommy

Question #129563

If x = 3 is the solution of x^2 + kx +15, value of k is

Expert's answer

"x^2+kx+15=0"

If "x=3" is the solution of this equation, then "3^2+3\\times k+15=24+3k=0" and "k=-8."

Answer: "k=-8."

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