October 2018 1 71 Report

Doprowadz di najprostszej postaci i oblicz wartosc

a) -2x(4x-3y)-(3x do kwadratu +2xy)-3x(2x+2y-4) x= 2 y= -1

b) 5x(x+2)+3(2-3x) x = -4

c) 5(2x+2y-1)-2(4x+3y-4) x=1\2 y = 2

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

e) -2(a do kwadratu - 2a+1) -4(a-2a do kwadratu-2) a= -1

f) 4(b-a-3)+2(a-b-2) a=2 b=1

g) 3x(-5+y)-5(xy+2x)-4 x=3 y=2


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