Question

2的a次方=3,2的b次方=5,2的c次方=60,求3的a次方乘3的b次方乘9的3-二分之c次方

Answer 1

2^a=3 2^b=5

2^a*2^b=2^(a+b)=15

2^(a+b)*2^6=15*2^6

2^(a+b+6)=960

2^(a+b+6)/2^c=2^(a+b+6-c)=960/60=16=2^4

a+b+6-c=4

3^a*3^b*9^(3-c/2)

=3^a*3^b*3^(2(3-c/2))

=3^(a+b+6-c)

=3^4=81