Q) 2 em
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2. The value of k for which the quadrabe equations
20² + Kx +2=0 has equal roots is -
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given, 20² + Kx +2=0 has equal roots
we know if roots are equal then D = 0
=> b² - 4ac = 0
=> k² - 4×400×2 = 0
=> k² = 3200
=> k = ± 40√2
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