npizziconi npizziconi 17-11-2022 Mathematics contestada Which equation shows the quadratic formula used correctly to solve 7x² = 9+ x for x? X= OX= O -1± √(1)-4(7) (9) 2(7) 1± √(-1)²-4(7) (9) 2(7) -1± √(-1)² +4(7) (9) 2(7) 1± √(-1)² +4(7)(9) 2(7)
