September 2018 2 21 Report

Nierownosci kwadratowe:

a)x^{2}-25\leq0

b)-x^{2}+x<0

c)3x^{2}>24

d)-6x^{2}>24

e)(x-1)^{2} +5x\geq6x+5

f)3x^{2}-x(x+1)<2x

g)x^{2}-2x-3>0

h)x^{2}+6x+9>0

i)t^{2}-t+\frac{1}{4}\leq0

j)-x^{2}+2x-3>0

k)-\sqrt{2} x^{2}+x+\sqrt{2}>0

l)(4-x)(x-5)>0

m)x(x-3)-4(5-x)\geq0

n)1\geq(k+2)^{2}

o)(x-1)(x+1)+(x-2)^{2}


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