what is the discriminant of 9x2 + 2 = 10x? โ356 โ172 28 72; what is the discriminant of 3 x squared minus 10 x = negative 2? 76 94 106 124; using the quadratic formula to solve 7x2 โ x = 7, what are the values of x?; which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?; using the quadratic formula to solve 5x = 6x2 โ 3, what are the values of x?; which equation has the solutions ?; which equation shows the quadratic formula used correctly to solve 5x2 + 3x โ 4 = 0 for x?; which equation has the solutions ? x2 + 2x + 4 = 0 x2 โ 2x + 4 = 0 x2 + 2x โ 4 = 0 x2 โ 2x โ 4 = 0