The product of 4.7 and 6.5 equals 30.55 what is the product of 4.7 and 0.65 4.7 and 65

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()