Answer:
x^3 * x^4 = x^7
Step-by-step explanation:
When multiplying numbers with the same base and different exponents the two exponents are added, and the base is kept the same.
Example
x^3= x * x * x
x^4= x * x * x * x
(x * x * x * x) * (x * x * x) = x^7
