What additional information is needed to prove apmo apno by the hl theorem?

c

step-by-step explanation:

-6 is the correct option from the above given options

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a