December 2018 1 5 Report
Doprowadź do najprostrzej postaci :
a)(x+5y)-(4+2x)-(3y-1) dla:x=4,9 y=-1,4
b)-(2a²+a-1)-(-2-2a-3a²)+(a- a² -3) dla:a= -2/3
Potrzebuje na jutro daje naj ! :)))))))

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