a) (x+4)+(2x-6)
b) -(2y+3x)+(-4y+2x+1)
c) -(x-2xy)-(4x+xy)+(xy-x)
d) (2a+b) * c-(2ac-bc+1)
e) 5(x-z)+2(z-x)
f) (x+7)(2x-1)
g) (2a-1)(a+4)
h) (4a-1)(2-3a)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) (x+4)+(2x-6)=x+4+2x-6=3x-2
b) -(2y+3x)+(-4y+2x+1)=-2y-3x-4y+2x+1=-6y-x+1
c) -(x-2xy)-(4x+xy)+(xy-x)=-x+2xy-4x-xy+xy-x=-6x+2xy
d) (2a+b) * c-(2ac-bc+1)=2ac+bc-2ac+bc-1=2bc-1
e) 5(x-z)+2(z-x)=5x-5z+2z-2x=3x-3z
f) (x+7)(2x-1)=2x²-x+14x-7=2x²+13x-7
g) (2a-1)(a+4)=2a²+8a-a-4=2a²+7a-4
h) (4a-1)(2-3a)=8a-12a²-2+3a=-12a²+11a-2
Proszę:)