Question

Упрости и реши : m^2-2m^2+n^2 , при m = 16.8 n =6.8

Answer 1

m^2-2m^2+n^2=-m^2 + n^2 = -(m^2-n^2) = -(m-n)(m+n) 

-(16.8-6.8)(6.8+16.8) =-10 *23.6=-236