\(17\cdot85+15\cdot17+2^3\cdot3\cdot5\)

\(=17\cdot100+40\cdot3\)

\(=1700+120=1820\)

\(17.85+15.17-120\)

\(=17.\left(15+85\right)\)\(-120\)

\(=17.100-120\)

\(=1700-120\)

\(=1580\)

17.85+15.17-120

=17.(15+85)-120

=17.100-120

=1700-120

=1580

K cho mk nha

  17 . 85 + 15 . 17 - 120

= 17 . ( 85 + 15 ) - 120

= 17 . 100 - 120

= 1700 - 120

= 1680

17.85 + 15.17 - 20

= 17.(85 + 15) - 20

= 17.100 - 20

= 1700 - 20

= 1680

 17.85+15.17-120

=1445+255-120

=1700-120

=1580      

2005-[256+(25-12)²]

  17 . ( 85 + 15 ) - 120

=17 . 100 - 120

=1700 - 120

=1580

17 . 85 + 15 . 17 - 120

= 17 . (85 + 15) - 120

= 17 . 100 - 120

= 1700 - 120

= 1580

17.85+15.17-120

=17.(85+15)-120

=17.100-120

=1700-120

=1580

(17.85 + 15.17) + (-120)

= 17.85 + 15.17 + (-120)

= 17.(85 + 15) + (-120)

= 17.100 + (-120)

= 1700 + (-120)

= 1580

(17.85+15.17)+(-120)

=((17.(85+15))+(-120)

=17.100+(-120)

=1700+(-120)

=1580

(17.85+15.17) +(-120)

 = (1445+255)-120

=1700-120

=1580

17.85 + 15.17 – 120 = 17.(85 + 15) – 120 = 17.100 – 120 = 1700 – 120 = 1580

= 1580 + 2012 = 3592

17.85+15.17-120+2012⁰

=17.(85+15)-120+1

=17.100-120+1

=1700-120+1

=1580+1

=1581

17×85+15×17-120+2012⁰

= (17×85)+(15×17)-(120+2012⁰)

= 1445 +225-121

=1579