Question

a 2.3^x=162

b 2^x-15=17

 

Answer 1

a, 3^x=162:2

     3^x=81

     3^x=3⁴

      =>x=4

b, 2^x=17+15

    2^x=32

    2^x=2⁵

=> x=5

Answer 2

a, 2.3^x=162

<=>3^x=81

<=>3^x=3^4

=>x=4

b, 2^x-15=17

<=>2^x=32

<=>2^x=2^5

=>x=5

Answer 3

a. =>3^x= 81

 => 3^x= 3^4 => x=4

b. => 2^x= 2

=> 2^x= 2^1 => x= 1

Answer 4

a ) 2.3^x = 162

=> 3^x = 162 : 2 = 81

=> x = 4

b ) 2^x - 15 = 17

=> 2^x = 32

=> x = 5