Question

Find the value(s) of k for which the equation x2 + 5kx + 16 = 0 has real and equal roots

Answer 1

Hey mate here is your answer...

Answer 2

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HEY MATE! THE ANSWER -

It is given that the eqn. has real and equal roots.

=> d=0

=> b²-4ac=0

(5k)² - 4(1)(16) = 0

25k² - 64 = 0

25k² = 64

k² = 64/25

(k)² = (8/5)²

k = ±8/5

HOPE IT HELPED!!

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