Question 182907
You're doing great. Now you need to multiply {{{c}}} and {{{c^3}}} to get {{{c*c^3=c^1*c^3=c^(1+3)=c^4}}}. So you basically add the exponents.


In addition, multiply {{{d^4}}} and {{{d^3}}} to get {{{d^4*d^3=d^(4+3)=d^7}}}


Note: you can only add the exponents if the bases are equal. So you CANNOT add the exponents of {{{c^4}}} and {{{d^3}}} since the bases "c" and "d" are different.


So {{{(-7c^3d^4)(4cd^3)=-28c^4*d^7}}}