tính, a,2016(-4)-(-1008).8 b,(3^2016.11+3^2018.5):(3^2017.4^2)

2 bình luận về “tính, a,2016(-4)-(-1008).8 b,(3^2016.11+3^2018.5):(3^2017.4^2)”

1. Answer

   a, 2016 . (-4) – (-1008) . 8

   = 1008 . 2 . (-4) + 1008 . 8

   = 1008 . (-8) + 1008 . 8

   = 1008 . (8 – 8)

   = 1008 . 0

   = 0

   b, (3^{2016} . 11 + 3^{2018} . 5) : {3^{2017} . 4^2)

   = (3^{2017} . 11/3 + 3^{2017} . 3 . 5) : {3^{2017} . 16)

   = (3^{2017} . 11/3 + 3^{2017} . 15) : {3^{2017} . 16)

   = [3^{2017} . (11/3 + 15)] : {3^{2017} . 16)

   = (3^{2017} . 56/3) : {3^{2017} . 16)

   = {3^{2017} . 56/3}/{3^{2017} . 16}

   = {56/3}/16

   = 7/6 

   Trả lời
2. a)

         2016(-4)-(-1008).8

   = (-1).2016.4+ 1008.8

   = 1008.4. [(-2)+ 2)

   = 1008.4 . 0

   = 0

   b)

         (3^2016.11+3^2018. 5):(3^2017. 4^2)

   = (3^2016.11+ 3^2018. 5)/(3^2017. 4^2)

   = (3^2016. (11+ 3^2 .5) )/( 3^2017. 4^2)

   = ( 11+ 9.5)/( 3. 16)

   = 56/48

   = 7/6

   ~ $kiddd$ ~

   Trả lời