Question

Find the value of k so that the equation has equal root :
x
$x {}^{2} - 2(1 + 3k)x + 7(3 + 2k)$

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Answer 1

Answer:

if the eq has equal roots

d = 0

b² -4ac = 0

(2+6k)² - 4×2 ×21+14k= 0