Question

[hoàng thiện nguyễn]

A.    { [ ( 3² + 1 ) . 10 - ( 8 : 2 + 6 ) ] : 2 } +55 - ( 10 : 5 ) ³

B.    { [ ( 10 - 2 . 3 ) . 5 ] + 2  - 2  . 6 } : 2 + ( 4 .5 )²

Answer 1

[乡☪ɦαทɦ💥☪ɦųα✔]

Bài làm :

\(A.\left\{\left[\left(3^2+1\right).10-\left(8:2+6\right)\right]:2\right\}+55-\left(10:5\right)^3\)

\(=\left\{\left[10.10-\left(4+6\right)\right]:2\right\}+55-\left(10:5\right)^3\)

\(=\left[\left(100-10\right):2\right]+55-2^3\)

\(=\left(90:2\right)+55-8\)

\(=45+55-8\)

\(=92\)

\(B.\left\{\left[\left(10-2.3\right).5\right]+2-2.6\right\}:2+\left(4.5\right)^2\)

\(=\left\{\left[\left(10-6\right).5\right]+2-12\right\}:2+20^2\)

\(=\left[\left(4.5\right)+2-12\right]:2+400\)

\(=\left(20+2-12\right):2+400\)

\(=10:2+400\)

\(=5+400\)

\(=405\)

Học tốt nhé

Answer 2

[Huỳnh Quang Sang]

a)  {[(3² + 1).10 - (8:2 + 6)] : 2} + 55 - (10 : 5)³

= {[(9 + 1).10 - (4 + 6)] : 2} + 55 - 2³

= {[10.10 - 10] : 2} + 55 - 2³

= {[10(10 - 1)] : 2} + 55 - 8

= {[10.9] : 2} + 55 - 8

= 45 + 55 - 8 = 92

b) {[(10 - 2.3).5] + 2 - 2.6} : 2 + (4.5)²

= {[(10 - 6).5] + 2 - 12} : 2 + 20²

= {[4 . 5] + 2 - 12} : 2 + 400

= {20 + 2 - 12} : 2 + 400

= 10 : 2 + 400 = 5 + 400 = 405