Question

Find the value of k for which x2 - (k+1) x + 4 = 0 has equal roots.​

Answer 1

Step-by-step explanation:

(k+4)x2+(k+1)x+1=0. Since the given quadratic equation has equal roots, its discriminant should be zero. Thus, the values of k are 5 and −3. Thus, the equal root of the given quadratic equation is either 1 or −13.

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