15 x 98 - 15 x 46 - 52 x 25
= 15 x (98 - 46) - 52 x 25
= 15 x 52 - 52 x 25
= (15 - 25) x 52
= -10 x 25 = -250
\(15\times98-15\times46-52\times25\)
\(=15\times\left(98-46\right)-52\times25\)
\(=15\times52-52\times25\)
\(=52\times\left(15-25\right)\)
\(=52\times\left(-10\right)\)
\(=-520\)
uingr hộ mk nha mọi người
Tính nhanh :
15 × 98 - 15 × 46 - 52 × 25
= 15 × ( 98 - 46 ) × 52 - 25
= 15 × 52 × 52 - 25
= 52 × ( 15 - 25 )
= 52 × ( - 10 )
= - 520