find the value of K so that the equation x^-2kx+7k-12=0 has equal roots
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Please check your question :
Discriminant = b² - 4ac
Equal roots, discriminant = 0
Hence, b² - 4ac = 0
=> (7k)² - 4(k)(-12) = 0
=> 49k² + 48k = 0
=> 49k² = -48k
=> 49k = -48
=> k = -48/49
Discriminant = b² - 4ac
Equal roots, discriminant = 0
Hence, b² - 4ac = 0
=> (7k)² - 4(k)(-12) = 0
=> 49k² + 48k = 0
=> 49k² = -48k
=> 49k = -48
=> k = -48/49
cuteprincess111:
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