September 2018 2 20 Report

a) 5 - 2y dla y = 1

b) a(2a + 1) dla a = 1

c ) s² - 1 dla s = -3

d) 2(x - y) dla x = -3 , y = 4

e) a + 1 - 4b dla a = -6 , b= ¾


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