Exercise algebra.manipulation.exponents.simplify

Description
simplify expression (powers)

Derivation

(-3*a)^4/(9*a^2)

⇒ algebra.manipulation.exponents.reciprocal-var

(-3*a)^4*a^(-2)/9

⇒ algebra.manipulation.exponents.distr-power

9*a^4*a^(-2)

⇒ algebra.manipulation.exponents.add-exponents

9*a^2