" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
25*4x*50x+25*100x+25*102x+51*25=25*11(1+2x)/:25
200x²+100x+102x+51=11+22x
200x²+180x+40=0 /:20
10x²+9x+2=0
Δ=9²-4*10*2=81-80=1
x=1/20*(-9-1)=-10/20=-1/2∉D v x=1/20*(-9+1)=-8/20=-0,4
Odp. x=-0,4