Odpowiedź:
Szczegółowe wyjaśnienie:
-3(y-7)=(-3y)+21
5ab(b+a)=[tex]5ab^{2} +5a^{2} b[/tex]
s(sy-2s2)=[tex]s^{2} y-2s^{3}[/tex]
-10we(5e-aw)= [tex]-(50we^{2} -10w^{2} ea)[/tex]
(m+2)(4+m)=4m+m2+8+2m
(10n-5)(5+8n)=50n+80n2-25-40n
(2-3x)(8x2+x-4)=16x2+2x-8-24x2-3x2+12x
sorki e nie umiem
(b-3)2=2b-6
3(f2+f)+(f-4)(3-f)=3f2+3f+3f-f2-12+4f