bjr
a) 25 = 5 x 5 = 5²
b) 64 = 8 x 8 = 2 x 2 x 2 x 2 x 2 x 2 = 2⁶
c) 81 = 9 x 9 = 3 x 3 x 3 x 3 = 3⁴
d) 729 = 27 x 27 = (3 x 3 x 3) x (3 x 3 x 3) = 3⁶
e) - 9 = - (3 x 3) = -3²
f) -625 = - 25 x 25 = - (5 x 5 x (5 x 5) = - 5⁴
g) 1 = 2⁰ = 3⁰ = 5⁰
h) 256 = 16 x 16 = (2 x 2 x 2 x 2) x (2 x 2 x 2 x 2) = 2⁸
