D = -142 - 4 * 1 * -29 = 312;
x1 = (14 + √312) : (2 * 1) = 14+2√78/2= 2 (7 + √78)/2=(7 + √78)
x2 = (14 - √312) : (2 * 1) = (7 -√78)
D = -142 - 4 * 1 * -29 = 312;
x1 = (14 + √312) : (2 * 1) = 14+2√78/2= 2 (7 + √78)/2=(7 + √78)
x2 = (14 - √312) : (2 * 1) = (7 -√78)