Question

12.10² - ( 15.10².2+18.10².2.3 )+2.10² = ?

Answer 1

Ta cói: 12.10^2 - (15.10^2.2+18.10^2.2.3) + 2.10^2 

= 12.10^2 - [10^2.(15.2-18.2.3)] + 2.10^2

= 12.10^2 - 10^2.(-78)+2.10^2

=10^2.(12-(-78)+2)

=10^2.(12+78-2)

=10^2.88

=100.88

=8800

Answer 2

        \(12.10^2-\left(15.10^2.2+18.10^2.2.3\right)+2.10^2\)          

   \(=1200-\left(3000+10800\right)+2.10^2\)       

   \(=1200-13800+200\)

   \(=-12600+200=-12400\)

Answer 3

=-12400