Consider the following two expressions the only difference b

Consider the following two expressions, the only difference being the presence or absence of parentheses.

expression 1:3x^2

Expession 2: (3x)^2

Calculate the difference between the two expressions when x = 5; that is, evaluate both expressions then subtract one value from the other.

Solution:
(1)3x^2
=x=5,
= 3(5)^2
=3*25= 75 -(1)

(2) (3x)^2
= (3*5)^2
=(15)^2
= 225 -(2)
Subtract (2) - (1)
= 225 - 75
= 150