(x+y)^2-(x-y)^2 x=0,5 y=0,5 (a+0,5b)^2-(0,5a+b^2) a=3 b=-1. Created by Лаура08. algebra-ru

(x+y)^2-(x-y)^2 x=0,5 y=0,5 (a+0,5b)^2-(0,5a+b^2) ...

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(x+y)^2-(x-y)^2 x=0,5 y=0,5
(a+0,5b)^2-(0,5a+b^2) a=3 b=-1

vladekopl (0,5+0,5)^2 - (0,5-0,5)^2=1-0=1
(3+0.5*(-1))^2-(0.5+(-1)^2)=2.5^2-2.5=3.75

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