October 2018 1 19 Report

Doprowadż do najprostrzej postaci;

a)(x+y)^{2}-(x-y)^{2}=

b)(x+4)^{2}+4( x-1)^{2}=

c)3 (2-y)^{2}+(4y-5)^{2}=

d)5(3-5a)^{2}-5(3a-7)^{2}*(3a+7)=

*razy

Bardzo proszę za pierwszą dobrą daję NAJ!


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