What are the zeros of the quadratic function f of x is equal to 2 x squared plus 16 x minus 9 ?
A
x is equal to negative 4 minus square root of 21 halves and x is equal to negative 4 plus square root of 21 halvesB
x is equal to negative 4 minus square root of 41 halves and x is equal to negative 4 plus square root of 41 halvesC
x is equal to negative 4 minus square root of 7 halves and x is equal to negative 4 plus square root of 7 halvesD
x is equal to negative 4 minus square root of 25 halves and x is equal to negative 4 plus square root of 25 halves