Simplify the following, giving your answer in exponential form: $y^2\cdot y^6$y2·y6.
Simplify the following, giving your answer in exponential form: $a^ma^n$aman.
Simplify the following, giving your answer in exponential form: $x^4\cdot10x^3$x4·10x3.
Simplify the following, giving your answer in exponential form: $u^2\cdot u^6\cdot u^3$u2·u6·u3.