Question

Tirem o baskhara disso
4K^(2)-4K-4

Answer 1

4k² - 4k - 4 = 0

Δ = b² -4ac
Δ = (−4)²−4⋅1⋅-4
Δ = 16 +64
Δ = 80

k = -b ± √Δ / 2k
k = -(-4) ± √80 / 2.4
k = 4 ± 4√5 / 8
k' = 4 - 4√5 / 8
k' = (1 - √5) / 2


k'' = 4 + 4√5 / 8
k'' = (1 + √5) / 2

S = {(1 - √5) / 2,  (1 + √5) / 28}