Question

simplify. assume all variables represent non-zero numbers. the answer should not contain negative exponents. (3d^5)(-7d^8)

Answer 1

\(\large 3d^5 \times -7d^8\)
I like to group this into \(3 \times -7\) and \(d^5 \times d^8\). I am not sure if this approach is correct, however. But if I do do that then this would be \(-21d^{13}\).

Answer 2

@Nnesha Would this approach be correct?

Answer 3

yes.
when we multiply same bases we should add the exponents and multiply coefficients