Question

4elevado a2-10+(2elevado a3-5)

Answer 1

             $4^2-10+2^3 - 5 \\ \\ =(2^2)^2+2^3-15 \\ \\ =2^4+2^3-15 \\ \\ =2^3(2+1)-15 \\ \\ =8.(3)-15 \\ \\ =24-15 \\ \\ =9$