(12.4⁴-2.4⁵):4⁵

=4⁴.(12-2.4):4⁵

=4⁴.4:4⁵

=4⁵:4⁵

=4⁰

=1

Chúc bạn học giỏi nha!!!

K cho mik với nhé Vũ Minh Hiếu

(12.4⁴-2.4⁵):4⁵

=(3.4.4⁴-2.4⁵):4⁵

=(3.4⁵-2.4⁵):4⁵

=[4⁵.(3-2)]:4⁵

=[4⁵.1]:4⁵

=4⁵:4⁵

⁼¹

(12x2 +12x4 - 12x6) : (2+4+6+....+18+20)

=12 x (2+4-6) : (2+4+6+...+18+20)

=12 x 0 : (2+4+6+...+18+20)

= 0

0 nha bn

 = ( 12 . 2 + 12 . 4 - 12 . 6 ) : ( 2+4+6+8+...+18+20)

= 12 . ( 2+4-6 ) : ( 2+4+6+8+...+18+20 )

= 12 . 0 : ( 2+4+6+8+...+18+20 )

= 0

thích cho mình nha !

a: =5+48=53

= 12.4 x (27.47+72.53)

=12.4x100

=1240

kết bn nha

=(72,53+27,47)x12,4

=100x12,4

=1240 

tk mk di mk se tk lai nha yen tam !

=12,4 x {72,53 + 27,47}

=12,4 x 100

=1240

12 . 4 + 7 . 25 - 100 : 4

= 48 + 175 - 25

= 223 - 25

= 198

#hoc_tot#

12.4+7.25-100:4

=48+175-25

=223-25

=198

12,4×(72,53+25,47)+24,8

12,4×98+24,8

1215,2+24,8

1240

\(\frac{\left(3.4.4^4-2.4^5\right)}{4^5}=\frac{\left(3.4^5-2.4^5\right)}{4^5}=\frac{4^5.\left(3-2\right)}{4^5}=1.\)

( 12.4⁴- 2.4⁵ ) :4⁵
= ( 3. 4⁵- 2.4⁵):4⁵
=(4⁵.(3-2) ) :4⁵
=4⁵:4⁵
=1

a; -\(\dfrac{4}{9}.\dfrac{7}{15}+\dfrac{4}{-9}.\dfrac{8}{15}\)

= - \(\dfrac{4}{9}\).(\(\dfrac{7}{15}+\dfrac{8}{15}\))

= - \(\dfrac{4}{9}\).1

= - \(\dfrac{4}{9}\)

b; - \(\dfrac{5}{4}.\dfrac{16}{25}\) + \(\dfrac{-5}{4}\).\(\dfrac{9}{25}\)

= - \(\dfrac{5}{4}\).(\(\dfrac{16}{25}\) + \(\dfrac{9}{25}\))

= - \(\dfrac{5}{4}\). 1

= - \(\dfrac{5}{4}\)

c; \(-\dfrac{5}{12}.\dfrac{4}{19}\) + \(\dfrac{-7}{12}.\dfrac{4}{19}-\dfrac{40}{57}\)

= - \(\dfrac{5}{12}\).\(\dfrac{4}{19}\) - \(\dfrac{7}{12}\).\(\dfrac{4}{19}\) - \(\dfrac{4}{19}\).\(\dfrac{10}{3}\)

= - \(\dfrac{4}{19}\).(\(\dfrac{5}{12}\) + \(\dfrac{7}{12}\) + \(\dfrac{10}{3}\))

= - \(\dfrac{4}{19}\).\(\dfrac{13}{3}\)

= - \(\dfrac{52}{57}\)