October 2018 2 16 Report

wykonaj mnozenie i zredukuj wyrazy podobne

a) (2-x)(6x+1)-(4x+3)(5-2x)

b)(1,1y-0,2)(3-0,5y)+(0,7+0,1y)(2y-0,4)

c)(\frac{3}{4}y+1\frac{2}{3})(1\frac{1}{3}y-\frac{1}{4})+(-1\frac{1}{2}-y)(-\frac{1}{3}y-\frac{3}{4})

doprowadz do najprostszej postaci i oblicz warosc liczbową wyrazenia

(x-4y)(2x+y)+3x(2y-x)-2y(y-3x)

dla x= -0,4

dla y=-0,3


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