bruh xd
BrokenLens Forums
JustynishMC
_TrenzK_
Hmm..
2x + y = k
y = k - 2x
x² + y² = 4
x² + ( k - 2x )² = 4
x² + k² + 4x² - 4kx - 4 = 0
5x² - 4kx + k² - 4 = 0
D < 0
b² - 4ac < 0
( -4k )² - 4.5 ( k² - 4 ) < 0
-4k² + 80 < 0
-4k² < -80
k² > -80/-4
k² > 20
k > √20 or k < -√20
k > 2√5 or k < -2√5
2x + y = k
y = k - 2x
x² + y² = 4
x² + ( k - 2x )² = 4
x² + k² + 4x² - 4kx - 4 = 0
5x² - 4kx + k² - 4 = 0
D < 0
b² - 4ac < 0
( -4k )² - 4.5 ( k² - 4 ) < 0
-4k² + 80 < 0
-4k² < -80
k² > -80/-4
k² > 20
k > √20 or k < -√20
k > 2√5 or k < -2√5