(2 + 4 + 6 + ...+ 98 + 100) x (36 x 333 - 108 x 111)

= (2 + 4 + 6 + ...+ 98 + 100) x (36 x 3 x 111 - 108 x 111)

= (2 + 4 + 6 + ...+ 98 + 100) x ( 108 x 111 - 108 x 111)

= (2 + 4 + 6 + ...+ 98 + 100) x 0 = 0

19991999*1998-19981998*1999

   (1+2+3+...+100)(108 x 111 - 36 x 333)

= (1+2+3+...+100)(36 x 3  x 111 - 36 x 3 x 111)

=(1+2+3+....) x 0

=0

(1 + 2 + 3 +..... + 100) (108 x 111 - 36 x 333) = 

(1 + 2 + 3 +..... + 100) (36 x 3 x 111 - 36 x 333) = 

(1 + 2 + 3 +..... + 100) (36 x 333 - 36 x 333) = 

(1 + 2 + 3 +..... + 100) x 0 = 0

Lời giải:
$36.333-108.111=36.3.111-108.111=108.111-108.111=0$

Suy ra:
$(2+4+6+...+100)(36.333-108.111)=(2+4+6+...+100).0=0$

HI

ta gọi (2+4+6+...+100) la a

=a     x     (36x33-108x111)

=a     x      11988-11988

=a     x      0

=0

đừng quên k cho mình nha

\(\left(2+4+6+...+100\right)\left(36.333-108.111\right)=\left(2+4+6+...+100\right).\left[111\left(36.3-108\right)\right]=\left(2+4+6+...+100\right).0=0\)

(2+4+6+.......+100) (36 x 333 -108 X 111 )
=2x(1+2+3+......+50)[36x111(1x3-3x1)
=2x(1+2+3+......+50)(36x111x0)
=2x(1+2+3+......+50)x0
=0

=(2+4+6+...+100)(36*3*111-108*111)

=(2+4+6+...+100)(108*111-108*111)

=(2+4+6+...+100)0

=0

(2+4+6+...+100)x(36x333-108x111)=(2+4+6+...+100)x(36x3x111-108x111)

=(2+4+6+...+100)x(108x111-108x111)

=(2+4+6+...+100)x0

=0

a)136 . 68 + 16 . 272

= 136.68+163.2.16

= 136.(68+2.16)

= 136.100

=13600

b)( 2 + 4 + 6 + ... + 100 ) . ( 36 . 333 - 108 . 111 )      [ Đặt 2 + 4 + 6 + ... + 100= A]

=           A.(36.333-36.3.111)

=           A.(36.333-36.333)

=           A.0

= 0                    

c) 19991999 . 1998 - 19981998 . 1999

= (19981998+10001).1998-19981998.(1998+1)

= 199981998.1998+10001.1998-19981998.1998-19981998

= 199981998.1998+19981998-19981998.1998-19981998

= 0
 

thanks bạn

a=124

4tyyuy

b. 3\(^6\) : 3\(^2\) + 2\(^3\) . 2\(^2\) = 3\(^{6-2}\) + 2 \(^{3+2}\) 

                                           = 3\(^4\) + 2 \(^5\) 

                                           = 81 + 32 = 113

KL ....

c. 36 . 333 - 108 . 111 = 36 . 3 . 111 - 108 . 111

                                 = 108 . 111 - 108 . 111

                                 = 0

KL ........

3⁶:3²+2³.2²=3^6-2+2³⁺²=3⁴+2⁵

36.333-108.111=11988-11988=0