Toán tính nhanh:(-325)x(425-27)-425x(27-325) 14/07/2021 By Valentina tính nhanh:(-325)x(425-27)-425x(27-325)
$(-325).(425-27)-425.(27-325)^{}$ $=-325.425+325.27-425.27+425.325^{}$ $=(-325.425+425.325)+27.(325-425)^{}$ $=0+27.(-100)^{}$ $=-2700)^{}$ Trả lời
( -325 ) . ( 425 – 27 ) – 425 . ( 27 – 325 ) = ( -325 ) . 425 + 325 . 27 – 425 . 27 + 425 . 325= [ ( -325 ) . 425 + 425 . 325 ] – 27 ( – 325 + 425 ) = 0 – 27 . 100= 0 – 2700= -2700 Trả lời
$(-325).(425-27)-425.(27-325)^{}$
$=-325.425+325.27-425.27+425.325^{}$
$=(-325.425+425.325)+27.(325-425)^{}$
$=0+27.(-100)^{}$
$=-2700)^{}$
( -325 ) . ( 425 – 27 ) – 425 . ( 27 – 325 )
= ( -325 ) . 425 + 325 . 27 – 425 . 27 + 425 . 325
= [ ( -325 ) . 425 + 425 . 325 ] – 27 ( – 325 + 425 )
= 0 – 27 . 100
= 0 – 2700
= -2700