October 2018 1 40 Report

1Oblicz

(5√+2√3)(2√5-√3)+(6-3√15)=

2Wykonaj działania

a)(2a-b)(a+3b)-(a-4b)(2a+b)

b)-3x(x-1)(x-2)-9x do kwadratu

c)(a+2c)(a-c+2)-ac

d)(a-c)(2a+c-3)+ac


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