Question

Explain why the following is correct x3x4=x7

Answer 1

x^3 * x^4 = x^7

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