4^3 x 4^12
a. 4^36**
b. 4^15
c. 4^12
d. 4^9
x^11/x^4
a. x^7**
b. X^15
c. x^44
d. x^11/4
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.
When multiplying/dividing, exponents are added/subtracted respectively.
4^3 * 4^12 ≠ 4^36 (wrong)
x^11/x^4 = x^7 (right)