Question

What's a difference between 4x and x over the power of 4?

Answer 1

4x=4 times x
xpower of 4=x times x times xtimes x

Answer 2

4x means "x" times the number 4. You can rewrite 4x as:

x + x + x + x

x^4 (x to the 4th power) means "x" times itself, 4 times. You can rewrite x^4 as:

x × x × x × x