What are the exact solutions of x2 − x − 4 = 0? a. x = the quantity of negative 1 plus or minus the square root of 15 all over 2 b. x = the quantity of 1 plus or minus the square root of 15 all over 2 c. x = the quantity of 1 plus or minus the square root of 17 all over 2 d. x = the quantity of negative 1 plus or minus the square root of 17 all over 2 which is it? 59 points and brainliest answer to the one who get it right.