Which of the quadratic function below has the smallest minimum value?
(Please help)

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()

Find the maximum value of p= 4x + 5y subject to the following constraints :

Iknow the answer but the calculator doesn't seem to give the right one