Math, asked by aliengirl, 1 year ago

Find k, for real roots : x² -kx +4 =0.
Fast please

Answers

Answered by saurabhsinghbihari
7
I hope this answer would be helpful for you
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saurabhsinghbihari: what's the answer?
saurabhsinghbihari: most welcome mrs. Aliya ji
saurabhsinghbihari: it's ok no problem
saurabhsinghbihari: ???
Answered by aman1091
11
hey there !!

given that:

= > x² - Kx + 4 = 0

=> for roots to be real D ≥ 0

=> b² - 4ac ≥ 0

=> k² - 4.4 ≥ 0

=> k² - 16 ≥ 0

=> k² ≥ 16

=> or equality holds

=> k = ± 4

ans......

hope it will help u

saurabhsinghbihari: ok sorry
aliengirl: Ohho mst setting jama rhe h mere question ke comment box me... Lage rho
saurabhsinghbihari: ya
Sabrinanathalia: well answered
Sabrinanathalia: wlc
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