Question

( 1+ 3 + 5 + ...+ 2005)  * ( 125125 * 127 - 127127*125)

Answer 1

( 1 + 3 + 5 +.....+ 2005) * ( 125125 * 127 - 127127 * 125 )

= ( 1+3+5+....+2005) * ( 125 * 1001 * 127 - 127 * 1001 * 125)

= (1 +3+5+....+2005) * 0

= 0

k cho mình nha bạn...!

Answer 2

Ta có:(1+3+5+...+2005)x(125125x127-127127x125)

       =(1+3+5+...+2005)x(125x1001x127-127x1001x125)

       =(1+3+5+...+2005)x0

       =0

Answer 3

   ( 1 + 3 + 5 + ...+ 2005 )  . ( 125125 . 127 - 127127 . 125 )

= ( 1 + 3 + 5 + ... + 2005 ) .  ( 125 . 1001 x 127 - 127 x 1001 x 125 )

= ( 1 + 3 + 5 + .. + 2005 ) .          0

=   0