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Find the value of k which the roots of the quadratic equation bracket K - 5 bracket close X square + 2 bracket K - 5 bracket close X + 2 equals to zero are equal

Posted by Arpita Verma 7 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Raunak _ Pandey ?? 7 years, 1 month ago

Put , for equal roots discriminant = 0 ,so b^2 -4ac =0 , then solve it you will get a quadratic equation = 4k^2 -48k +140 = 0 ....... Solve it and k = 7 and 5

1Thank You

Raunak _ Pandey ?? 7 years, 1 month ago

K= 7 , k= 5

0Thank You

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CBSE > Class 10 > Mathematics