WORTH 100 POINTS // I NEED HELP! EXPLAIN HOW YOU GOT THE ANSWER ALSO

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Simplify the algebraic expression 8y-2(y+4)