September 2018 1 20 Report

rozwiąż równania i nierówność:

a) 2x^{2}=8

b) -x^{2}+8x-16\geq0

c)x^{2}+5>3x

d)x^{2}-4x+1=0

e)2x^{2}+x-1=0

f)7-x(5x+2)\leq0

g)5x^{2}>3


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