Question

Write in expand form
a) a-5 b) (-a)4​

Answer 1

Explanation:

a-5

First remove the minus from the power

a-5 = 1/a5

then expand

1/a × 1/a × 1/a × 1/a × 1/a

(-a)4

here power is in already positive ,

= (-a) × (-a) × (-a) × (-a)