" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Δ=b²-4ac, b=-3, a=1,c=2
Δ=9-8=1,√Δ=1
x₁=3-1/2=1
x₂=3+1/2=2
Odp.x∈<1,2>
2. x-7x²+2x-14=0
-7x²+3x-14=0
Δ=9-4*(-7)*(-14)=9-21*14<0 brak rozwiązań bo Δ<0
Δ = 1
x1 = 3-1/2 = 1
x2 = 3+1/2 =2
x∈<1,2>
2. -7x² + 3x - 14 = 0
Δ = b² - 4ac
Δ = 9 - 392
√Δ = - 383
rownanie nie ma rozwiazania