1. zapisz wyrażenie w jak najprostszej postaci. a) 5(a+4c)-3(2a-5c) b) 12x(x-2y+2)+5y(-2x-y+10) c) 5km(4-3k-2m)-10 km (2-1,5k-m) d) 11(a²-2a+1)-4(-a²-2a-3)+2(-a²+5a+1) e) 9(2t-3w)-8(4w+5t)+7(4t-w)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
a) 5(a+4c)-3(2a-5c)=5a+20c-6a+15c=-a+35c
b) 12x(x-2y+2)+5y(-2x-y+10)=12x²-24xy+24x-10xy-5y²+50y=12x²+24x-34xy-5y²+50y
c) 5km(4-3k-2m)-10 km (2-1,5k-m)=20km-15k²m-10km²-20km+15k²m+10km²=0
d) 11(a²-2a+1)-4(-a²-2a-3)+2(-a²+5a+1)=11a²-22a+11+4a²+8a+12-2a²+10a+2=
=13a²-4a+35
e) 9(2t-3w)-8(4w+5t)+7(4t-w)=18t-27w-32w-40t+28t-7w=6t-66w