What are the exact solutions of x2 + 5x + 1 = 0 using x equals negative b plus or minus the square root of the quantity b squared minus 4 times a times c all over 2 times a? a x = the quantity of 5 plus or minus the square root of 21 all over 2 b x = the quantity of negative 5 plus or minus the square root of 21 all over 2 c x = the quantity of 5 plus or minus the square root of 29 all over 2 d x = the quantity of negative 5 plus or minus the square root of 29 all over 2