November 2018 1 42 Report
Doprowadź do najprosteszej postaci i oblicz wartości liczbowe wyrażen:

A. 3x(1-2x)-(x-1)(x+2)+(4x-2) dla x= -2
B. (2a-b)(a+2b)-(2a-3b)(a+b) dla a= -2/3 b= -1
C. -2(x do potęgi 2 -3)+3x(2-x)-(x-3)(4-3x) dla x= -1,2
D. (x-4y)(2x+y)+3x(2y-x)-2y(y-3x) dla x= -0,4 y= -0,3

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