What is the value of 5^2 * 5^3 written as a singular expression? how would you show your work to prove that this expression is equivalent to 5^2 * 5^3 what is the value of 3^2 * 9^2 written as an expression? show your work. what is the value of 4^4 * 2^3 written as an expression? show your work. what is the value of 4^3 * 2^3 written as an expression? show your work. what is the following written as a singular expression? a^4 * a^13 what is the following written as a singular expression written as a positive exponent? a^-15 * a^22 is there a rule you create to simply a number raised to a power times a number raised to a different exponent?