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P=ab-2/3a*1/4b=ab-1/6ab=5/6ab
b)b+a+b+b+a+b+b+a+b+b+b+a=4a+8b
P=(a+b)^2+ab=a^2+2ab+b^2+2b=a^2+4ab+b^2
c)2x+2y+2x+2y=4x+4y
P=y^2+xy=X^2
d)2a+5+3+5+2a+2a+a+a+a+1+2=9a+1b
P=2a+3*5+a(2a+3)+a^2=a^2+2a+15+2a^2+3a=3a^2+5a+15
^=to potęga *=mnożemie
Mam nadzieje że pomogłam i licze na NAJ !?