Answer:

4. −24b−30c

5.=56y2z5+48yz2

Step-by-step explanation:

4. −6(5c+4b)

=(−6)(5c+4b)

=(−6)(5c)+(−6)(4b)

=−30c−24b

=−24b−30c

5.((−8y)(z2))((−7y)(z3)−6)

=((−8y)(z2))((−7y)(z3)+−6)

=((−8y)(z2))((−7y)(z3))+((−8y)(z2))(−6)

=56y2z5+48yz2

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