Which pair of expressions is equivalent using the associative property of multiplication?

6(4a ⋅ 2) = 24a ⋅ 12
6(4a ⋅ 2) = (4a ⋅ 2) ⋅ 6
6(4a ⋅ 2) = 6 ⋅ 4a ⋅ 2
6(4a ⋅ 2) = (6 ⋅ 4a) ⋅ 2

Step-by-step explanation:

The associative property of multiplication says that when we multiply three or more than three real numbers, the product is always the same nevertheless of their regrouping by using parenthesis.

i.e.

Hence, the right option is

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