August 2018 1 14 Report
Oblicz wartości liczbowe wyrażeń:

a) x²-x dla x=7
b) a²-3a+1 dla a=-11
c) 1+x(x+4) dla x=-11
d)x - 2y dla x =1 i y=-1
e)2x²-y(x+1) dla x=-2 i y =5
f)(m+1)(n-2) dla m =2 i n-1
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