October 2018 2 15 Report

42/212 Rozwiąż

a)

(2x-1)(2x+1)-(4x+5)^2=-4x-2

b)

(x+3)^2-2(x-2)^=4x+10

c)

x^2+5/3-(x+2)^2/4=x-1

d)

x(x-1)/2+x(x-3)/3+(4-x)(4+x)=10

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