已知2的x次方=3,4的y次方=5,则2的3x+2y次方的值是
问题描述:
已知2的x次方=3,4的y次方=5,则2的3x+2y次方的值是
答
2的3x+2y次方
=2的3x次方×2的2y次方
=(2的x次方)³×(4的y次方)
=3³×5
=27×5
=135