(9x8-12-12x5)x(1+2+3+4+5)
= (72-12-60)x(1+2+3+4+5)
= 0x(1+2+3+4+5)
=0
( 9 x 8 - 12 - 5 x 12 ) x ( 1 + 2 + 3 + 4 + 5 )
= ( 3 x 3 x 4 x 2 - 12 - 5 x 12 ) x ( 1 + 2 + 3 + 4 + 5 )
= ( 6 x 12 - 12 - 5 x 12 ) x ( 1 + 2 + 3 + 4 + 5 )
= { 12 x ( 6 - 5 - 1 ) } x ( 1 + 2 + 3 + 4 + 5 )
= 12 x 0 x ( 1 + 2 + 3 + 4 + 5 )
= 0
k cho mình nha chúc bạn học tốt
Trả lời :.............................................
( 9 x 8 - 12 - 5 x 12 ) x ( 1 + 2 + 3 + 4 + 5 )
= 72 - 12 - 60 x 15
= 0 - 900
= 900
Hk tốt..........................................
k nhé Ter Stegen
=
( 9 x 8 - 12 - 5 x 12 ) x ( 1 + 2 + 3 + 4 + 5 )
= ( 72 - 12 - 60 ) x 15
= 0 x 15
= 0
\(\left(9\cdot8-12-5\cdot12\right)\cdot\left(1+2+3+4+5\right)\)
\(=0\cdot15\)
\(=0\)