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(2X-20)(X+6)(X-16)=0

Răspuns :

(2X-20)(X+6)(X-16)=0
1) 2X-20 = 0 => X1 = 10;
2) X+6 = 0 => X2 = -6;
3) X-16 = 0 => X3 = 16;
S = {-6,10,16}