3/x +x/3=5/2 (wszystko w ułamkach)
3/x+x/3=5/2
zal. x≠0
(3*3+x*x)/3x=5/2
(9+x²)/3x=5/2 (Mnozymy "na krzyz")
18+2x²=15x
2x²-15x+18=0
Δ=225-144=81
√Δ=9
x=(15-9)/4=1,5 lub (15+9)/4=6
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3/x+x/3=5/2
zal. x≠0
(3*3+x*x)/3x=5/2
(9+x²)/3x=5/2 (Mnozymy "na krzyz")
18+2x²=15x
2x²-15x+18=0
Δ=225-144=81
√Δ=9
x=(15-9)/4=1,5 lub (15+9)/4=6