Simplify the following, giving your answer in index form: $p^{11}\times p^9$p11×p9.

What term should go in the space?

Simplify the following, giving your answer in index form: $8y^4\times8y^3$8y4×8y3.

Simplify the following, giving your answer in index form: $9m^2\times6m^2$9m2×6m2.