Use the discriminant to determine the number if real roots for the quadratic equation. y=x^2 -10x + 25
A. one real root
B. two real roots
C. no real roots
d. no solution to the equation
My answer: A but can you show me how I go the answer

Question

Use the discriminant to determine the number if real roots for the quadratic equation. y=x^2 -10x + 25
A. one real root
B. two real roots
C. no real roots
d. no solution to the equation
My answer: A but can you show me how I go the answer

misty1212 · Answer

sure 
$$x^2-10x+25=(x-5)^2$$

anonymous · Answer

thanks for ur help I really do accept it

anonymous · Answer

and i have more question that I need to help on and to tell me if I am right or wrong

misty1212 · Answer

actually it says "use the discriminant" 
if you compute 
$$b^2-4ac$$ you will get $0$ so one solution, but if the discriminant is zero, then you have a prefect square so same thing

anonymous · Answer

oaky thanks