Doprowadź wyrażenia algebraiczne do najprostrzej postaci 1.(a+2s)-1/2(a-2s)= 2. 3(s+2f)-2(s+f)= 3. 2x(a-b) +5(ax-bx)= 4. 7(ax-2)-4a(x-2)+2(ax+2)= 5. 2x(x+2)-(x² +2x)-4=
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1. (a+2s)-1/2(a-2s)=a+2s-1/2a+s=1/2a+3s
2. 3(s+2f)-2(s+f)=3s+6f-2s-2f=s+4f
3. 2x(a-b) +5(ax-bx)=2ax-2bx+5ax-5bx=7ax-7bx
4. 7(ax-2)-4a(x-2)+2(ax+2)=7ax-14-4ax+8a+2ax+4=5ax+8a -10
5. 2x(x+2)-(x² +2x)-4=2x² +4x-x² - 2x-4 =x²+2x -4