Rozwiązane

Opuść nawiasy i zredukuj wyrazy podobne:

– (2a – 3b) – (a +5b) =

(2a – b) + (–4a + 6b) – (–8b – a) = 

– (2x – 3y) – (–4x +7y) – (–3x – 9y) = 

(–x2 + 3x) + (–1,3x2 – 3,4x + 1,9) = 

14a2x – (–ax  – 2,1a2x) + (–5ax –a2x) = 

3x + 2y – [7x + y – (–4x – 10y)]=​



Odpowiedź :

a) -2a +3b - a -5b= -3a-2b

b) 2a-b-4a+6b+8b+a= -a+13b

c) -2x+3y+4x-7y+3x+9y=5x+5y

d) -[tex]x^{2}[/tex]+3x-1,3[tex]x^{2}[/tex]-3,4x+1,9= -2,3[tex]x^{2}[/tex]-0,4x+1,9

e) 14[tex]a^{2}[/tex]x+ ax +2,1[tex]a^{2}[/tex]x-5ax-[tex]a^{2}[/tex]x = 10,9[tex]a^{2}[/tex]x-4ax

f) 3x + 2y-(7x+y+4x+10y)= 3x + 2y-7x-y-4x-10y= -8x-9y