Question

All of the following are equivalent, except
(12 + 3)x
12x + 3x
(12 + 3x)x
15x​

Answer 1

All are equivalent except for (12 + 3x)x


EXPLANATION

(12 + 3x)x ends up being an exponential value while the rest simplify out to 15x

Answer 2

(12+3x)x

Explanation:

1- 12x+3x 15x

2- 12x+3x 15x

3- 13x+4x 17x

4- 15x