Question

Does anyone know how to solve this

Answer 1

I WILL USE THE LAWS OF EXPONENTS WHEN WE MULTIPLY POWERS OF THW SAME BASES WE KEEP ONE POWER AND ADD THE EXPONENTS.

`= 7^( - 5) * 7^(2) \\ = {7}^( - 5 + 2) \\ = {7}^( - 3) \\ = \frac{1}{ {7}^(3) } \\ = (1)/(343)`

ATTACHED IS THE SOLUTION