If one root of quadratic equation (K + 1)x2 - 5x + 2k = 0 is reciproca

1.	If one root of quadratic equation (K + 1)x2 - 5x + 2k = 0 is reciprocal of other then value of K is1.2 2. 0 3. –1 4. 1
Answer» Correct option is (4) 1 (k + 1)x² - 5x + 2k = 0 Product of roots = α. 1/α = 2k/k+1 ⇒ k + 1 = 2k ⇒ k = 1

If one root of quadratic equation (K + 1)x2 - 5x + 2k = 0 is reciprocal of other then value of K is1.2 2. 0 3. –1 4. 1

Answer»

Correct option is (4) 1

(k + 1)x² - 5x + 2k = 0

Product of roots = α. 1/α = 2k/k+1

⇒ k + 1 = 2k ⇒ k = 1

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If one root of quadratic equation (K + 1)x2 - 5x + 2k = 0 is reciprocal of other then value of K is1.2 2. 0 3. –1 4. 1

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