Simplify the following, giving your answer with a positive index: $2^2\times2^2$22×22
Simplify the following, giving your answer with a positive index: $4y^3\times6y$4y3×6y
Simplify the following, giving your answer with a positive index: $p^2\times p^{-7}$p2×p−7
Simplify the following, giving your answer with a positive index: $y^{\frac{6}{5}}\times y^2$y65×y2