" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1-4x+2x-27x²-18x-3-9+4x²>-19x²-77
-4x²-20x+66>0 //:2
-2x²-10x+33>0
δ=100+4*2*33
δ=364
pierw. z δ=2 pierw. z 91
x ∈{(-niesk.; (10-2 pierw. z 91)/(-4) ) lub
(10+2 pierw. z 91)/(-4);+niesk.)}