若m的x次方=2,m的y次方=3,则x+y次方=_____,m的3x+2y=______
问题描述:
若m的x次方=2,m的y次方=3,则x+y次方=_____,m的3x+2y=______
答
解
m^x=2
m^y=3
m^(x+y)
=m^x×m^y
=2×3
=6
m^(3x+2y)
=m^3x×m^2y
=(m^x)³×(m^y)²
=8×9
=72