October 2018 2 40 Report

1.Wykonaj redukcję wyrazów podobnych i oblicz ich wartość liczbową

a)x²-3y+2x²+5y+x²-y= dla x=jedna druga i y=trzy piąte

b)x²y²-5xy+x²y²+2xy-4xy= dla x=jedna trzecia i y=2


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