SOLUTION: If the roots of the x^2-10x+21=m are equal then m is: (A)4. (B)25. (C)-4. (D)0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: If the roots of the x^2-10x+21=m are equal then m is: (A)4. (B)25. (C)-4. (D)0      Log On


   

Question 982267: If the roots of the x^2-10x+21=m are equal then m is:
(A)4. (B)25. (C)-4. (D)0
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find what's needed to make the left side a perfect square.