hi, i need to simplify 6a^3 x 2a^2
im not sure what i would do, i know i do 6/2=3 but i don't know what to do to the top numbers. can anyone help please?
No, I don't know where you're getting 8 from. The number part is $\displaystyle \frac{18}{3} = 6$
For the exponent you're doing $\displaystyle -2 - (-1) = -2 + 1 = -1$
Therefore the answer is $\displaystyle 6a^{-1}$.
Since $\displaystyle a^{-1}$ is defined as$\displaystyle \frac{1}{a}$ then $\displaystyle \frac{6}{a}$ is equally correct