решите на множестве R уравнение  a) 9х^2 +24x+20=0 b) 4x^2+20x+29=0 v) 4x^2-28x+50=0 g) 49x^2-70x+26=0 d) x^2+(2+5)x+10=0 e) x^2+(5+4)x+20=0 j) x^2-(1+7)x+7=0 z)x^2-(1+8)x+8=0 e) x^2+(2-5)x-10=0 k)x^2+(5-4)x-20=0 l)x^2+9x+14=0 m) x^2+9x+18=0 pojaluista pomogite na zavtra nado
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