Which shows the best use of associative and commutative properties to make simplifying 1/6 - 8 + 3 - 5/6 + 9 easier? A. [1/6+(-8)] + [3+ (-5/6) + 9]
B. (3+1/6) + [9 + (-8) + (- 5/6)]
c. (1/6 - 5/6) + [3 + 9 + 9- (-8)]
d. [3 + 9 + 1/6] + [-5/6 + (-8)]

the correct answers i think are b. and d.

give me brainliest if it is correct!

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

the answer to this is a. a^2 + b^2 = c^2