Simplify the expression.

Show your work.

7t^4x7t^4

A. 49t^8

B. 14t^4

C. 49t^16

D. 14t^8

Solution:

7t^4x7t^4 = (7x7) x (t^4 x t^4) (Using multiplication of two exponential expressions with same base)

= 49t^(4+4) (Adding the exponents since the bases are the same)

= 49t^8

Therefore, the simplified expression is 49t^8. The answer is A.