Question

Simplify the following expression.
7 with an exponent of 4 times 7 with an -6 exponent.

A.) 1/49
B.) 1/7
C.) 49
D.) 2,401

Answer 1

remember that exponentioal rule
x^m times x^n=x^(m+n)
therefor
7^4 times 7^-6=7^(4-6)=7^(-2)
remember the other rule
x^-m=1/(x^m) so
7^-2=1/(7^2)=1/49
answe ris A