Q.1.    Simplify and write in exponential form: (eg.,  11^{6}\div 11^{2}= 11^{4})

            (i)\: 2^{9}\div 2^{3}           (ii)\: 10^{8}\div 10^{4}        (iii)\: 9^{11}\div 9^{7}        (iv)\: 20^{15}\div 20^{13}          (v)\: 7^{13}\div 7^{10}

             

Answers (1)
S seema garhwal

  (i)\: 2^{9}\div 2^{3}     

can be simplified as 2^{9-3}=2^6

  (ii)\: 10^{8}\div 10^{4}       

 can be simplified as  10^{(8-4)}=10^4

(iii)\: 9^{11}\div 9^{7}     

can be simplified as 9^{(11-7)}=9^4

  (iv)\: 20^{15}\div 20^{13}         

can be simplified as 20^{(15-13)}=20^2

(v)\: 7^{13}\div 7^{10}

  can be simplified as 7^{(13-10)}=7^3

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