October 2018 2 20 Report

Oblicz wartości liczbowe sum (najpierw zredukuj wyrazy podobne)

a) 2a + 3 - a + 6 + 7a dla a= -2

b) 2z + t - 3z +4t - 1 dla z=5 i t=0,1

c) 13x - 2y + 7 - 9x + y - 4 + x -3 dla x=0,2 y= -1

d) n² + n - 7 + 3n² - n - 9 - n + 16 dla n= -½


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