Question

1 Find the values of K for which the quadratic equation X2+5 x + 25 =0 has equal roots?​

Answer 1

Answer: K = ±2

Step-by-step explanation:

Given equation : x²+5kx+25

Since the equation have equal roots.

So,

b²-4ac = 0

=> (5k)²- 4*1*25 = 0

=> 25K²-100 = 0

=> 25K²= 100

=> K² = 100/25

=> K = ±√4 = ±2

Hence the value of K is ±2

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