Question

If the roots of the quadratic equation x(2x -m) +18=0 are same then the value of m is​

Answer 1

Answer:

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Answer 2

Answer:

Given quadratic equation can be written as,

x

2

−(2m)x+(8m−15)=0

Now for equal roots, Discriminant =0

⇒b

2

−4ac=0

⇒(−2m)

2

−4(8m−15)=0

⇒m

2

−8m+15=0

⇒(m−3)(m−5)=0, factor

⇒m=3,5