Question

已知a的x次方等于4,a的y次方等于3,求a的x+y次方及a的2x+y次方的值. 急啊!

Answer 1

a^(x+y)
=a^x×a^y
=4×3
=12
a^(2x+y)
=a^2x×a^y
=(a^x)^2×a^y
=4^2×3
=48