Question

Laws of exponent : multiplication  and power to a power simplify

Answer 1

`(4r^4s^(-2))(-3rs^(-3))(rs)`

the whole expression is a multiplication

we must group what we can multiply

`(4*-3)(r^4* r* r)(s^(-2)* s^(-3)* s)`

when multiply equal terms the exponents are added

so

`(-12)(r^(4+1+1))(s^(-2+(-3)+1))`

do the sum and the final expression is

`-12r^6s^(-4)`