'simplify 3(a^2)(b^2) x 4(a^3)b.' is my answer correct?

i got 3ab^6 x 4ab^4, which was then 12ab^10.

i'm confused about multiplying a and b when both have different powers.

First work with stencil one. use a combination of reflections, rotations, and translations to see whether stencil one will overlap with the original pattern. list the sequence of rigid transformations you used in your attempt, noting the type of transformation, the direction, the coordinates, and the displacement in