Find value ol k, for which the equation X2 +5kx + 16 = 0 has real and equal roots.
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Answer:
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Answered by
1
If the roots are equal
D = b^2 -4ac =0
(5k)^2 -4*1*16 =0
25k^2 -64 = 0
25k^2=64
K^2 = 64/25
K= 8/5
K= 1.6
D = b^2 -4ac =0
(5k)^2 -4*1*16 =0
25k^2 -64 = 0
25k^2=64
K^2 = 64/25
K= 8/5
K= 1.6
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