Thực hiện phép tính 7^2 – 36 : 3^2 200 : [ 119 – ( 25 – 2 . 3)] 39 . 50 + 25 . 39 + 75 + 61

$7^{2}$ – ${36}$ : $3^{2}$

= ${49}$ – ${36}$ : ${9}$

= ${ 49 : 4 }$

= ${12,25}$

${200 : [ 119 – ( 25 – 2 . 3) ]}$

= ${ 200 : [ 119 – ( 25 – 6 ) ]}$

= ${ 200 : ( 119 – 19 ) }$

= ${ 200 : 100 }$

= ${ 2 }$

${39 . 50 + 25 . 39 + 75 . 61}$

= ${ 39 . ( 50 + 25 ) + 75 . 61 }$

= ${ 39 . 75 + 75 . 61 }$

= ${ 75 . ( 39 + 61)}$
= ${ 75 . 100 }$

= ${ 7500}$

$\text{STUDY WELL !}$