October 2018 1 17 Report

[tex]a) (3x-1)^2-5(2x+1)^2+(6x-3)(2x+1)=(x-1)^2\\ b) \frac{2}{\sqrt{3}-1}-\frac{1}{\sqrt{3}+1}+\frac{5-2\sqrt{3}}{4}\\ c) [(\frac{81}{625})^-^0^,^7^5:(1\frac{2}{3})^3-(0,125)^1^/^3 [/tex][/tex]


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