Bài 1:

2^\(x\) = 4

2\(^x\) = 2²

 \(x=2\)

Vậy \(x=2\)

Bài 2:

2\(^x\) = 8

2\(^x\) = 2³

\(x=3\)

Vậy \(x=3\)

\(\left(x+1\right)^3=27\)

\(\left(x+1\right)^3=3^3\)

\(\Rightarrow x+1=3\)

\(x=2\)

\(\left(x+1\right)^3=27\)

\(< =>\left(x+1\right)^3=3.3.3=3^3\)

\(< =>x+1=3< =>x=3-1=2\)

\(\left(2x+3\right)^3=9.81\)

\(< =>\left(2x+3\right)^3=9.9.9\)

\(< =>\left(2x+3\right)^3=9^3\)

\(< =>2x+3=9< =>2x=6\)

\(< =>x=\frac{6}{2}=3\)

1)8

2)5

3)16

4)2

5) 1

6)5

7)3

8)3

9)2

10)3

trã lời có bước trung gian nữa bn nha

giúp mk vs

2 mũ 3 x5 mũ 3 

=(2x5) mũ 3

=10 mũ 3

a)\(27.65+27.35+300=27.\left(65+35\right)+300\)

\(=27.100+300=2700+300=3000\)

b)\(3838:\left[\left(190-6.5^2\right):4+3\right]\)

\(=3838:\left[\left(190-6.25\right):4+3\right]\)

\(=3838:\left[\left(190-150\right):4+3\right]\)

\(=3838:\left[40:4+3\right]=3838:\left[10+3\right]\)

\(=3838:13=\dfrac{3838}{13}\)

c)\(2022-x=2021\)

\(x=2022-2021=1\)

d)\(26+14:\left(x-5\right)=33\)

\(14:\left(x-5\right)=33-26=7\)

\(x-5=14+7=2\)

\(x=2+5=7\)

e)đề hỏi làm j thế bạn

a) x=3

b) x=1

c) x=1 hoặc -5

d) x=2

e) x=2

g) x=2

h) x=1 hoặc x=0 hoặc x=-1

i) x=-1 hoặc x=0

\(a.4^x=64\)

\(4^x=4^3\)

\(\Rightarrow x=3\)

\(b,3^{x\times4}=81\)

\(3^{x\times4}=3^4\)

\(x\times4=4\)

\(\Rightarrow x=1\)

\(c,\left(2+x\right)^4=81\)

     \(\left(2+x\right)^4=3^4\) 

       \(2+x=3\)

                \(x=3-2\)

                \(x=1\)

\(d,5^{x\times5}=125\)

     \(5^{x\times5}=5^3\)

        \(x\times5=3\)

        \(x=3:5\)

        \(x=\frac{3}{5}\)

tui cũng đang bí

\(2^x=16\Leftrightarrow2^x=2^4\Leftrightarrow x=4\)

\(2^x=128\Leftrightarrow2^x=2^7\Leftrightarrow x=7\)

b), c) tương tự

d) \(5^{2x}=625\Leftrightarrow5^{2x}=5^4\Leftrightarrow2x=4\Leftrightarrow x=2\)

e) tương tự d

TL ;

helu kni do di mn

ht

@ giang ??????????