Question

for what value of K, the equation
ax²+6KX+4=0 has equal roots​

Answer 1

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GIVEN :-

ax²+6kx+4=0

TO FIND :-

Find K

SOLUTION :-

If Equation has Equal Roots then.,.

Discriminant ( D ) = 0

D = b² - 4ac = 0

=> ax² + 6kx + 4 = 0

a = a , b = 6k , c = 4

D = 36k² - 144 = 0

(6k)² - (12)² = 0

(6k - 12)(6k + 12) = 0

k = 2