Không có đáp án nào đúng cả bạn ạ.

\(=\lim\limits_{x\rightarrow0}\dfrac{\sqrt{4x+1}-\left(2x+1\right)+2x+1-\sqrt[3]{6x+1}}{x^2}\)

\(=\lim\limits_{x\rightarrow0}\dfrac{-\dfrac{4x^2}{\sqrt{4x+1}+2x+1}+\dfrac{x^2\left(8x+12\right)}{\left(2x+1\right)^2+\left(2x+1\right)\sqrt[3]{6x+1}+\sqrt[3]{\left(6x+1\right)^2}}}{x^2}\)

\(=\lim\limits_{x\rightarrow0}\left(-\dfrac{4}{\sqrt{4x+1}+2x+1}+\dfrac{8x+12}{\left(2x+1\right)^2+\left(2x+1\right)\sqrt[3]{6x+1}+\sqrt[3]{\left(6x+1\right)^2}}\right)\)

\(=\dfrac{-4}{1+1}+\dfrac{12}{1+1+1}=2\)

24B 25B 26A 27C 28A 29B 30C 31C 32C

24B 25B 26A 27C 28A 29B 30C 31C 32C

1.B, 2.A, 3.ko bt, 4.C, 5.C, 6.B, 7.C, 8.A, 9.A ,

Câu 1 :

a) 25 - (-75) + 32 - (32 + 75)

= 25 + 75  + 32 - 32 - 75

= 25 + (75 - 75) + (32 - 32)

= 25 + 0 + 0

= 25

b) |-127| - 18 . (5  - 6)

= 127 - 18 . (-1)

= 127 + 18

= 145

c) 24.(16 - 5) - 16.(24 - 5)

= 24.11 - 16.19

= 16.16,5 - 16.19

= 16.(16,5 - 19)

= 16.(-2,5)

= -40

ủng hộ tớ nha

kb nha

a)25-(-75)+32-(32+75)=25-(-75)+32-107=25

b)l-127l-18.(5-6)=127-18.(-1)=127-(-18)=145

c)24.(16-5)-16.(24-15)=24.11-16.9=264-144=120

\(a,25-\left(-75\right)+32-\left(32+75\right)\)

\(=25+75+32-32-75\)

\(=25+\left(75-75\right)+\left(32-32\right)\)

\(=25+0+0\)

\(=25\)

\(b,\left|-127\right|-18.\left(5-6\right)\)

\(=127-18.\left(-1\right)\)

\(=127+18\)

\(=145\)

\(c,24.\left(16-5\right)-16.\left(24-5\right)\)

\(=24.16-24.5-16.24+16.5\)

\(=\left(24.16-16.24\right)-\left(24.5-16.5\right)\)

\(=24.\left(16-16\right)-5.\left(24-16\right)\)

\(=24.0-5.8\)

\(=0-40\)

\(=-40\)

32 x 24 + 32 x 76

= 32 x (24 + 76)

= 32 x 100

= 3200

32 x 24 + 32 x 76

= 32 x ( 24 + 76 )

= 32 x 100

= 3200

32 x 24 + 32 x 76 = 3200

làm rồi kko đc loke mứt công

bye

(125.37.32):4=(125:4).(37:4).(32:4)=5.9,25.8=9,25.(5.8)=9,25. 40=9,25.4.10=37.10=370

Theo mk là :

   32 x 0,99 x 25 x 1,25 

= ( 32 x 25 ) x ( 0,99 x 1,25 )

= 800 x 1,2375

= 990

mk viết lại đề nha

\(7\times5^2-32\div2^3+3^2\)

\(7\times25-2^5\div2^3+9\)

\(175-2^2+9\)

\(175-4+9\)

\(180\)

tk mk nha bn____________!!

7 x 25 - 2⁵ : 2³ + 9

175 - 2² + 9

175 - 4 + 9

= 180

Đáp án đúng là : 180

tk to nha

7 x 5 ^ 2 - 32 : 2 ^ 3 + 3 ^ 2

= 7 x 25 - 2⁵ : 2³ + 9

= 175 - 4² + 9

= 175 - 4 + 9

= 180