Here's the question you clicked on:
jfistel1
The Principle of Powers states: a) If a = b and n is a negative integer, then an = bn b)If a = b and n is a negative integer, then –an = –bn c)If a = b and n is a positive integer, then an + bn d) If a = b and n is a positive integer, then an = bn
The answer is d): If a=b and n is a positive integer, then a^n = b^n (where ^ means "exponent")