1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 07:29:28
1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值1.已知x^a=

1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值
1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值

1.已知x^a=4,x^v=9,求x^2a+b的值~2.若2x+y=3,求4^x*2^y的值
1、x^(2a+b)=[x^(2a)]×[x^b]=[x^a]²×[x^b]=16×9=144
2、[4^x]×[2^y]=[2^(2x)]×[2^y]=2^(2x+y)=2³=8