a) 9 .3 ³ . $\frac{1}{81}$ . 3 ² b) 4 . 2 ∧ 5 . ( 2 ³ . $\frac{1}{16}$ 16/07/2021 Bởi Sarah a) 9 .3 ³ . $\frac{1}{81}$ . 3 ² b) 4 . 2 ∧ 5 . ( 2 ³ . $\frac{1}{16}$
Đáp án: a)=$3^{3}$ b)=$2^{6}$ Giải thích các bước giải: a)9.$3^{3}$ . $\frac{1}{81}$ .$3^{2}$ =$3^{2}$. $3^{3}$ . $3^{2}$ . $\frac{1}{81}$ =($3^{2}$ .$3^{3}$ . $3^{2}$) . $\frac{1}{81}$=$3^{7}$ . $\frac{1}{81}$ =$3^{3}$ b)4. $2^{5}$ . ($2^{3}$ . $\frac{1}{16}$ )=$2^{2}$ .$2^{5}$ . $2^{3}$ . $\frac{1}{16}$ =($2^{2}$ .$2^{5}$ . $2^{3}$) . $\frac{1}{16}$ =$2^{10}$ . $\frac{1}{16}$ =$2^{6}$ Bình luận
Đáp án: `a)=3^3` `b)=2^6` Giải thích các bước giải: `a)``9 . 3^3 . 1/81 . 3^2``=3^2 . 3^3 . 1/81 .3^2``=(3^2 . 3^3 . 3^2).1/81``=3^(2+3+2) . 1/81``=3^7 . (1^4)/(3^4)``=3^7 . 1/(3^4``=3^7/3^4``=3^7 : 3^4``=3^(7-4)``=3^3``b)`` 4 . 2 ^5 .(2^3 . 1/16)``=2^2 . 2^5 .(2^3 . 1/16)``=2^2 . 2^5 . 2^3 . 1/16``=(2^2 . 2^5 . 2^3) . 1/16``=2^(2+5+3) . 1/16``=2^10 . 1/16``=2^10/16``=2^10/2^4``=2^10 : 2^4``=2^(10-4)``=2^6` Bình luận
Đáp án:
a)=$3^{3}$
b)=$2^{6}$
Giải thích các bước giải:
a)9.$3^{3}$ . $\frac{1}{81}$ .$3^{2}$
=$3^{2}$. $3^{3}$ . $3^{2}$ . $\frac{1}{81}$
=($3^{2}$ .$3^{3}$ . $3^{2}$) . $\frac{1}{81}$
=$3^{7}$ . $\frac{1}{81}$
=$3^{3}$
b)
4. $2^{5}$ . ($2^{3}$ . $\frac{1}{16}$ )
=$2^{2}$ .$2^{5}$ . $2^{3}$ . $\frac{1}{16}$
=($2^{2}$ .$2^{5}$ . $2^{3}$) . $\frac{1}{16}$
=$2^{10}$ . $\frac{1}{16}$
=$2^{6}$
Đáp án:
`a)=3^3`
`b)=2^6`
Giải thích các bước giải:
`a)`
`9 . 3^3 . 1/81 . 3^2`
`=3^2 . 3^3 . 1/81 .3^2`
`=(3^2 . 3^3 . 3^2).1/81`
`=3^(2+3+2) . 1/81`
`=3^7 . (1^4)/(3^4)`
`=3^7 . 1/(3^4`
`=3^7/3^4`
`=3^7 : 3^4`
`=3^(7-4)`
`=3^3`
`b)`
` 4 . 2 ^5 .(2^3 . 1/16)`
`=2^2 . 2^5 .(2^3 . 1/16)`
`=2^2 . 2^5 . 2^3 . 1/16`
`=(2^2 . 2^5 . 2^3) . 1/16`
`=2^(2+5+3) . 1/16`
`=2^10 . 1/16`
`=2^10/16`
`=2^10/2^4`
`=2^10 : 2^4`
`=2^(10-4)`
`=2^6`