Question

Proszę o szybką odpowiedz ‼️ daje naj‼️

Answer 1

-x^2 + 2x + 4 > 0

delta = 4 + 4*4*1 = 20

pierwastek(delta) = 2 * pierwastek(5)

x1 = (-2-(2 * pierwastek(5)))/-2 = 1 + pierwastek(5)

x2 = (-2+(2 * pierwastek(5)))/-2 = 1 - pierwastek(5)

parobola w gore zatem

x = (1 - pierwastek(5), 1 + pierwastek(5))

3x^2 - 2x - 1 >= 0

delta = 4 + 4 *3*1 = 16

pierwastek(delta) = 4

x1 = (2-4)/6 = -2/6 = -1/3

x1 = (2+4)/6 = 1

parobola w gore zatem

x = (-∞, -1/3] U [1,∞)

x^2 -x - 6 >= 0

delta = 1 +4*6*1 = 25

pierwastek(delta) = 5

x1 = (1-5)/2 = -2

x2 = (1+5)2 = 3

parobola w gore zatem

x = (-∞, -2] U [3,∞)