9x^2-12x+4=0
D=b^2-4ac;
D= 144-144=0; корD = 0;
x= (-b+0)2a; x= (12+0)2*9; x= 12:18; x = 2/3;
o(-2/3)->(+∞)
B: x є (-2/3; +∞)
9x^2-12x+4=0
D=b^2-4ac;
D= 144-144=0; корD = 0;
x= (-b+0)2a; x= (12+0)2*9; x= 12:18; x = 2/3;
o(-2/3)->(+∞)
B: x є (-2/3; +∞)