Question

Which expression is equivalent to (8^2)−4?

Answer 1

Answer:

Step-by-step explanation:

Answer 2

$(8^2)^{-4}=8^{2\cdot(-4)}=8^{-8}=\dfrac{1}{8^8}=\dfrac{1}{8\cdot8\cdot8\cdot8\cdot8\cdot8\cdot8\cdot8}\\\\Used:\\(a^n)^m=a^{n\cdot m}\\\\a^{-n}=\dfrac{1}{a^n}\\\\\underbrace{a\cdot a\cdot a\cdot a\cdot...\cdot a}_{n}=a^n$