Question

计算:(1) (-a)的3次幂(-a)的2次幂; (2)(ab)的5次幂; (3)(y的m次幂)

Answer 1

(-a)³(-a)²

=(-a)^(3+2)

=(-a)^5

(ab)^5

=a^5b^5

(y^m)^3

=y^(3m)