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2x la a doua-5x=0rezolvati in R ecuatia de gradul 2 forma incompleta
5x la a doua +8=0
x la a doua +x=0


Răspuns :

2x²-5x=0, x(2x-5)=0, x1=0, 2x-5=0, x2=5/2

5x²+8=0, 5x²=-8 nu are solutii in R

x²+x=0, x(x+1)=0 x1=0, x2=-1