Rewrite $10^{-10}\div10^4$10−10÷104 in the form $a^n$an.
Simplify the following, giving your answer with a positive index: $2^3\div2^{-2}$23÷2−2
Evaluate $5^2\div5^{-2}$52÷5−2.
Evaluate $3^{-2}\div3^3$3−2÷33.
Recall of laws of exponents with integral powers. Rational exponents with positive real bases