" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2x2-2>3x-2x-2
2x>x-2
2x-x>-2
x>-2
b)2x2 - 3x+4>-x2+2-7
4x-3x+4>2x+2-7
x+4>2x-5
-x>-9/(-1)
x=9
4x²-8x+4 > 3x²-6x-2x+4
4x²-8x+4-3x²+8x-4 > 0
x²>0
x>0
odp x∈ (0,+∞)
2x²-3x+4 > - x²+2x-7
2x²-3x+4+ x²-2x+7 > 0
3x²-5x+11 > 0
Δ=25-132 = -108
Δ<0 , brak miejsc zerowych