Are 9 (4-x) and 36+9x equivalent expressions

No.

Step-by-step explanation:

If you simplify the first problem, (9 (4-x)) It would equal 36-9x. While they may be close one has an addition sign and the other has a minus sign.

No, they are not equal expressions

Step-by-step explanation:

9 (4-x)

Expanding the algebra

9 (4) - 9 (x)

36-9x is different from 36+9x because it has different signs.

An example is, let's assume x is 2, we would see that it won't give the same answer. If x is 2, then

36-9 (2)

36-18=18

36+9 (2)

36+18 = 54

18 is not equal to 54

36-9x is not also equal to 36+9x