Question

6. For what value of m, the quadratic equation x’ - mx + 9 = 0 have real roots?

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Answer 1

Answer:

we have to put Discriminant=0,if quadratic equation have real and equal roots

b²-4ac=0

m²-4(1)(9)

m²-36=0

m²=36

m=√36

m= ±6

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