10)6^2÷4×3+2×5^2-3^17÷3^15. 11)2^4×5-[130-(12-2^2)^2]

2 bình luận về “10)6^2÷4×3+2×5^2-3^17÷3^15. 11)2^4×5-[130-(12-2^2)^2]”

1. 10)

   6^2 : 4 xx 3 + 2 xx 5^2 – 3^17 : 3^15

   = 36 : 4 xx 3 + 2 xx 25 – 3^2

   = 9 xx 3 + 50 – 9

   = 27 + 50 – 9

   = 77 – 9

   = 68

   11)

   2^4 xx 5 – [ 130 – ( 12 – 2^2 )^2]

   = 80 xx 5 – [ 130 – ( 12 – 4 )^2]

   = 80 xx 5 – [ 130 – 8^2 ]

   = 80 xx 5 – [ 130 – 64 ]

   = 80 – 66

   = 14

   Trả lời
2. \bb 10)

   6^2:4xx3+2xx5^2-3^{17}:3^{15}

   =36:4xx3+2xx25-3^2

   =9xx3+50-9

   =27+50-9

   =68

   $\\$

   \bb 11)

   2^4xx5-[130-(12-2^2)^2]

   =16xx5-[130-(12-4)^2]

   =80-[130-8^2]

   =80-[130-64]

   =80-66

   =14

   Trả lời