" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2x² + x ≤ 0
M. zerowe:
2x² + x = 0
x(2x + 1) = 0
x = 0
lub
2x +1 = 0
2x = -1 /:2
x = -0,5
a > 0
x ∈ < 0,5; 0 >
c)
(3 - 2x)(3 + 2x) ≥ 1
9 - 4x² - 1 ≥ 0 |*(-1)
4x² - 8 ≤ 0
M. zerowe:
4x² - 8 = 0 /:4
x² - 2 = 0
(x + √2)(x - √2) = 0
x = -√2 v x = √2
x ∈ < -√2; √2 >