no bạn ơi

a)(1000+1):11

=1001:11

=91

91=7.13

b)14²+5²+2²

=196+25+4

=221+4

=225

225=3².5²

c)333:3+225:15²

=333:3+225:225

=111+1

=112

112=2⁴.7

^{tớ làm đầy đủ  li-ke cho tớ nha}

Bạn thiếu phần 29.31+144:12 mũ hai

 a. \(160 - \left( {{2^3}{{.5}^2} - 6.25} \right)\)

\(\begin{array}{l} = 160 - \left( {8.25 - 6.25} \right)\\ = 160 - 25.\left( {8 - 6} \right)\\ = 160 - 25.2\\ = 160 - 50\\ = 110\end{array}\)

Ta có: 110 = 2.5.11

b. \(37.3 + 225:{15^2}\)

\(\begin{array}{l} = 37.3 + 225:225\\ = 37.3 + 1\\ = 111 + 1\\ = 112\end{array}\)

Ta có: \(112 = 2^4.7\)

c. \(5871:103 - 64:{2^5}\)

\(\begin{array}{l} = 5871:103 - 64:32\\ = 57 - 2 = 55\end{array}\)

Ta có: 55 = 5. 11

d. \(\left( {1 + 2 + 3 + 4 + 5 + 6 + 7 + 8} \right){.5^2} - 850:2\)

\(\begin{array}{l} = \left[ {\left( {1 + 8} \right) + \left( {2 + 7} \right) + \left( {3 + 6} \right) + \left( {4 + 5} \right)} \right]{.5^2} - 850:2\\ = \left( {9 + 9 + 9 + 9} \right){.5^2} - 850:2\\ = {9.4.5^2} - 850:2\\ = {36.5^2} - 425\\ = {36.5^2} - {5^2}.17\\ = {5^2}.\left( {36 - 17} \right)\\ = {5^2}.19=475\end{array}\)

Ta có: \(475 = 5^2.19\)

a: \(160-\left(2^3\cdot5^2-6\cdot25\right)\)

\(=160-\left(8\cdot25-150\right)\)

\(=160-200+150=10=2\cdot5\)

b: \(=111+225:225=112=2^4\cdot7\)

c: \(=57-64:32=57-2=55=5\cdot11\)

d: \(=\left(9\cdot\dfrac{8}{2}\right)\cdot25-425=36\cdot25-425=25=5^2\)

Chọn A

A

a, 2¹.5².17 = 2.25.17 = 50.17 = 850 

b, 2² + 2³ + 2⁴ = 4 + 8 + 16 = 28

c, 2⁵.3 + 2⁴:8 + 50: 5²

= 32.3 + 16:8 + 50:25

=96 + 2 + 2

= 100

d, 11² - 10² - 3²

= 121 - 100 - 9

= 21 - 9

= 12

e, 1³ + 2³ + 3³ + 4³ + 5³

= ( 1+ 2+3+4+5)²

= 15²

= 225

a) \(14^2+5^2+2^2=196+25+4=225=3^2\cdot5^2\)

b) \(400:5+40=80+40=120=2^3\cdot3\cdot5\)

a) 142 + 52 + 22 = 196 + 25 + 24 = 225
Phân tích ra thừa số nguyên tố:

Vậy:
225 = 32 . 52.
b) 400 : 5 + 40 = 80 + 40 = 120
Phân tích ra thừa số nguyên tố:

Vậy:
120 = 23 . 3 . 5.