Răspuns :
0,125=0,025x patrat+0,1
-0.025x patrat=0.1 - 0.125
-0.025x patrat=-0.025 / : (-0.025)
x patrat= 1
x= radical din1
-0.025x patrat=0.1 - 0.125
-0.025x patrat=-0.025 / : (-0.025)
x patrat= 1
x= radical din1