Question
Find the value of k if the quadratic equation x² + kx + 16 = 0 has equal roots. (NCERT Class 10 – Important)
Answer: Equal roots ⇒ discriminant D=0. D=b²−4ac=k²−4×1×16=0 ⇒ k²=64 ⇒ k=±8.
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Question
Answer: Equal roots ⇒ discriminant D=0. D=b²−4ac=k²−4×1×16=0 ⇒ k²=64 ⇒ k=±8.
Question
Answer: Equal roots ⇒ discriminant D=0. D=b²−4ac=k²−4×1×16=0 ⇒ k²=64 ⇒ k=±8.