若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________
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若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________若x^m=4,x^n=3
若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________
若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________
若x^m=4,x^n=3,则x^3n=________,x^m+2n=_________
x^3n=(x^n)^3=3^3=27
x^(m+2n)
=x^m*x^2n
=x^m*(x^n)^2
=4*3^2
=36
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