Question

Which of these is not equal to 1 (over) 25? a.) 5^5 x 5^0 x 5 x 5^-4 b.) 5^2 x 5^-6 x 5^3 x 5^-1 c.) 5 x 5^0 x 5^-1 x 5^-2 d.) 5^6 x 5^-10 x 5^3 x 5^-1 Help :)

Answer 1

A
Add the exponents and 1/25 = 5^-2

Answer 2

BCD all add up to 5^-2