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jacob46
"Equal roots" means the quadratic has only one unique solution, which happens when it can be written as a perfect square like (x - a)^2 = 0.
21 May 2025, 10:50
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m= -8 from y^2+my+15=0
From eqn x^2+mx-n=0
Sum of the roots is -b/a
As roots are same,
Let the roots be Q & Q
2Q=-(-8)/1
Q=4.
Product of roots = c/a
Q^2= -n/1
4^2 =16=-n
=> n=-16
Is this process correct?
From eqn x^2+mx-n=0
Sum of the roots is -b/a
As roots are same,
Let the roots be Q & Q
2Q=-(-8)/1
Q=4.
Product of roots = c/a
Q^2= -n/1
4^2 =16=-n
=> n=-16
Is this process correct?
