Zapisz w postaci jak najprostszej sumy algebraiczne:
a)2k²-(k+3)(2k+4)=
b)-3(a+2b)(a-b)+3a²=
a) 2k (do 2) - (k+3)(2k+4) = 2k (do 2) - 2k (do2) +4k + 6k + 12 = 10k + 12
b) -3(a+2b)(a-b) + 3a (do 2) = -3(a (do 2) - ab + 2ab - 2b (do 2) = -3(a (do 2) + ab - 2b (do 2) = -3a (do 2) - 3ab + 6b (do 2)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) 2k (do 2) - (k+3)(2k+4) = 2k (do 2) - 2k (do2) +4k + 6k + 12 = 10k + 12
b) -3(a+2b)(a-b) + 3a (do 2) = -3(a (do 2) - ab + 2ab - 2b (do 2) = -3(a (do 2) + ab - 2b (do 2) = -3a (do 2) - 3ab + 6b (do 2)